Quantitative
Aptitude Practice Questions (10 – 03 – 2018)
Directions: Study the
following information carefully and answer the question given beside:
The table below reflects
the preferences of people who like to visit different brands of food chain
restaurants, as found by a survey conducted at Connaught Place, New Delhi on a
weekend.
The number in each cell
represents the number of poeple who prefer different types of restaurants. The
restaurant in the row represents the first preference and the restaurant in the
column represents the second preference Ex. Row 1, column 1 = 760 means that
there are 760 people whose first and only preference is Dominoz. Row 1, column
2 = 525 means there are 525 poeple whose first preference is Dominoz and the
second preference is Pizzahut.
1. The number of poeple whose first preference is either Goli
or McD and second preference is either KFC or Box8 is approximately what
percentage of the poeple whose first and only preference is Dominoz?
a) 21%
b) 31%
c) 41%
d) 60%
e) 34%
2. What is the total number of poeple who prefer only one
brand of restaurants?
a) Less than 760
b) 1528
c) 970
d) Can’t be determined
e) None of these
3. If a fee of Rs. 10 is collected from every person who
prefers restaurants of more than one brand and also prefers Dominoz over other
brands, while a fee of Rs. 8 is collected from those whose second preference is
Dominoz and Rs. 5 is collected from those who prefer only Dominoz, then what is
the total fee amount collected?
a) ₹ 42,008
b) ₹ 49,606
c) ₹ 55,684
d) Data Inadequate
e) None of these
4. If the popularity of a brand of restaurant is measured by
the number of poeple who like it as their first preference and if the poeple
like only restaurants that are either their first or second preference, then
approximately by what percentage is the number of poeple who like the most
popular brand of restaurants more than the number of poeple who like the least
popular brand of restaurants?
a) 200%
b) 300%
c) 400%
d) 700%
e) 600%
5. What is the difference in the number of poeple whose first
preference is either Dominoz or Others and those whose first preference is
Subway?
a) 1310
b) 2371
c) 2480
d) 1810
e) None of these
Directions (6 – 10):
Study the following information carefully and answer the question given beside:
The chart below shows the
percentage of different type of cars or vehicles used by Ola cabs in different
years
6. If the total number of cars used by Ola cabs in 2014 and
2016 was 12 lakhs and 15 lakhs respectively, then what is the percentage
increase in the number of Mini cars used by Ola cabs from 2014 to 2016?
a) 0%
b) 20%
c) 25%
d) 30%
e) None of these
7. If the total cars used by Ola cabs in the year 2016 was
twice that in the year 2012, then how much is use of Micro cars change from
2012 to 2016?
a) It decreased by approximately 15%
b) It increased by approximately 15%
c) It increased by approximately 45%
d) Can’t be determined
e) None of these
8. If the total cars used by Ola cabs, which was 37 lakhs in
2012, continuously increased by 10% every successive year, then by what percent
did the use of Sedan increases from 2012 to 2016?
a) 0%
b) 14.64%
c) 46.41%
d) 33.1%
e) None of these
9. The total cars used by Ola cabs in the year 2015 was 1.3
times of that in the year 2013. If the number of Sedan cars used in the year
2015, were 52,000 then how many Mini cars were used in the year 2013?
a) 50,000
b) 70,000
c) 65,000
d) 62,000
e) None of these
10. Which of the following statements is definitely true?
a) The use of Ola auto is increased
continuously over the given period.
b) For any of the given years, twice
the use of Mini cars was more than that of Micro cars.
c) If the total cars used by Ola in
all the years was the same, then the highest percentage increase in the use of
any vehicle over that of the previous year for any of the years during the
given period, was recorded by Ola Auto.
d) All of the above
e) None of the above
Solutions:
1. B) We need to find out the number of people whose 1^{st} preference
is either Goli or McD and whose 2^{nd} preference is either KFC or
Box8.
This means we need to
count all those people whose 1^{st} preference is Goli and 2^{nd} preference
is either KFC/Box8 or all those whose 1^{st}preference is McD and 2^{nd} preference
is KFC/Box8.
1^{st} Preference

2^{nd} Preference

No. of People

Goli

KFC

74

Goli

Box8

53

McD

KFC

43

McD

Box8

68

Total number of people
satisfying this criteria is 238
Total number of people
whose 1^{st} and only preference is Dominoz = 760
Therefore Required% =
238/760 * 100 = 31.3 ≈ 31%
2. B) The fastest way to solve it, is to count all the number along the
diagonal as given below in the table
Dominoz

Pizzahut

Subway

Goli

McD

KFC

Box8

Others


Dominoz

760


Pizzahut

214


Subway

152


Goli

112


McD

112


KFC

72


Box8

83


Others

23

i.e. 760 + 214 + 152 +
112 + 112 + 72 + 83 + 23 = 1528
3. A) Number of people whose 1st preference is Dominoz (A) = 525 + 311 + 440 +
590 + 200 + 370 + 68 = 2504
No. of people whose 2nd
preference is Dominoz (B) = 892 + 222 + 151 + 127 + 63 + 132 + 59 = 1646
No. of people who only
prefer Dominoz (C) = 760
Amount collected from A =
2504 × 10 = 25040
Amount collected From B =
1646 × 8 = 13168
Amount collected from C =
760 × 5 = 3800
Total amount collected =
25040 + 13168 + 3800 = 42008
4. C) By observation we know that the most popular restaurant is Dominoz and
the least popular is Others.
Total number of people
likes Dominoz = 760 + 525 + 311 + 440 + 590 + 200 + 370 + 68 + 892 + 222 + 151
+ 127 + 63 + 132 + 59 = 4910
(Count all 1st preference
and 2nd preference as well as only preference)
Total no. of people who
like Others = 68 + 74 + 118 + 63 + 69 + 132 + 74 + 23 + 59 + 88 + 53 + 48 + 68
+ 31 + 29 = 997
Difference in Dominoz and
Others = 3913
Therefore required% =
3913/997 * 100 = 392.4 ≈ 400%
5. B) 1st Preference is Dominoz = 760 + 525 + 311 + 440 + 590 + 200 + 370 + 68
= 3264
1st Preference is Others
= 59 + 88 + 53 + 48 + 68 + 31 + 29 + 23 = 399
those whose 1st
preference Dominoz and Others (A)= 3264 + 399 = 3663
1st preference is Subway
(B)= 222 + 498 + 152 + 76 + 112 + 61 + 53 + 118 = 1292
∴ Reqd difference =
3663 – 1292 = 2371
6. C) It can be observed from the line graph beside, that the percentage use
of Mini in 2014 and 2016 is the same, i.e., 15%. Hence, the percentage increase
in the use of Mini cars from 2014 to 2016 is the same as the percentage
increase in the total use
From 2014 to 2016 = (15 –
12)/12 * 100 = 25%
7. C) Let the total cars used by Ola cabs in 2012 = 100
8. C) Here the actual value of the total cars used by Ola in 2012 is not
important
Let the total cars used
by Ola in 2012 be 100
⇒ Total use in 2016 = 100 × 1.1 × 1.1 × 1.1 × 1.1 = 146.41
As it is observed that
the percentage of Sedan cars is same in 2012 and 2016 (i.e. 15%), then the increase
in the use of Sedan cars be from 100 to 146.41 ie. 46.41%
9. A) In the year 2015, number of Sedan cars = 20% of total cars.
If 20% ≡ 52,000 then,
100% is
52000/20 * 100 = 260000
Hence, total cars used in
2015 = 2.6 lakhs
⇒ Total cars used by
Ola cabs in 2013 = 2.6/1.3 = 2lakhs
∴ Number of Mini cars used in 2013 = 25% of 2 lakhs =
50,000
10. C) As the total use of cars is not given for any of the years, statement A
may or may not be true.
In the year 2013, twice
the use of Mini cars was exactly equal to that of Micro cars. In all the other
years it's always less. Hence statement B is false.
Statement C is definitely
true as in 2012, the percentage use of Ola auto was 5% and in 2013, it was 10%,
which is an increase of 100% (as twice of 5)