**1. Suhas decided to donate 15% of his salary. On the day of donation he changed his mind and donated 1,650/- which was 11/15 of what he had decided to donate earlier. How much is Suhas' salary?**

a) 12000

b) 13500

c) 15000

d) 16000

e) Other than those given as options

**2. Work done by A in one day is four times the work done by B in one day, while the work done by B in one day is one-third of the work done by C in one day. C alone can complete the work in 16 days. In how many days can all the three together complete the work?**

a) 12 days

b) 10 days

c) 8 days

d) 6 days

e) Other than those given as options

**3. The total of the ages of a class of 60 girls is 900 years. The average age of 20 of the girls is 12 years and that of the other 20 girls is 16 years. What is the average age of the remaining girls ?**

a) 14 years

b) 15 years

c) 16 years

d) 17 years

e) Other than those given as options

**4. A and B started a business with initial investments in the ratio 5 : 7. If after one year their profits were in the ratio 1 : 2 and the period for A's investment was 7 months, B invested the money for ?**

a) 6 months

b) 2 1/2 months

c) 10 months

d) 4 months

e) 7 months

**5. A shopkeeper sold an article for Rs.1,380 at a loss of 8%. At what price should it be sold to gain a profit of 8% ?**

a) Rs.1,560/-

b) Rs.1,620/-

c) Rs.1,680/-

d) Rs.1,740/-

e) None of these

**6. A profit of 25% is earned on goods when a discount of 20% is allowed on the marked price. What profit percentage will be earned when a discount of 10% is allowed on the marked price?**

a) 45 9/11%

b) 42 3/4%

c) 40 5/8%

d) 37 2/3%

e) None of these

**7. The compound interest on a certain sum for 2 years at 20% per annum is Rs.880/-. The simple interest on the same sum for double the time at half the rate percent per annum is :**

a) Rs.800/-

b) Rs.1,000/-

c) Rs.1,200/-

d) Rs.1,600/-

e) None of these

**8. A tap can empty a tank in one hour. A second tap can empty it in 30 min. If both the taps operate simultaneously, how much time is needed to empty the tank ?**

a) 20 min

b) 30 min

c) 40 min

d) 45 min

e) None of these

**9. When the price of sugar decreases by 10%, a man could buy 1 kg more for Rs.270/-. The original price of sugar per kg is :**

a) Rs.25/-

b) Rs.30/-

c) Rs.27/-

d) Rs.32/-

e) None

**10. A train passes a 50 m long platform in 14 sec and a man standing on a platform in 10 sec. The speed of the train is**

a) 24 km/hr

b) 26 km/hr

c) 40 km/hr

d) 45 km/hr

e) None of these

**Solutions:**

**1. C)**

Let Suhas'
salary =Rs. x

According to
question,

x × 15/100 × 11/15
= 1650

x =
Rs.15,000/-

**2. D)**

According to
question,

A = 4B; C =3B

A : B = 4:1

B : C =1 :3

Ratio of work
done by A, B and C in one day = 4:1:3

C's 1 day's
work =3 unit

C's 16 day's
work =3 x 16 = 48 unit

Time taken by
A, B and C to complete the

Work =
48/4+1+3 = 48/8 = 6 days

**3. D)**

Let the
average age of remaining 20 girls = x years

According to
question, 20x12+20x16+20xx=900

240 +320 +20x
= 900

20x =900-560

20x =340

x =17 years

**4. C)**

Let B invested
the money for x months. According to question,

Ratio of
investment of A and B = Ratio of their profit

5*7 / 7*x =
1/2

X = 10 months

**5. B)**

Let the cost
price of article = Rs. x

According to
question,

x * 92/100
=1380

x =
Rs.1,500/-

Required
price = 1500 * 108/100 = Rs.1620

**6. C)**

Let the
marked price of goods = Rs.100/-

Selling price
of goods = 100 x80/100 = Rs.80/-

Cost price of
goods = 80 x 100/125= Rs.64/-

When a
discount of 10% is allowed on the marked price of goods then selling price will
be =100 x 90 = Rs.90/-

Required
profit percentage = 90-64/64 * 100 = 26/64 * 100 = 325/8 = 40 5/8%

**7. A)**

**8. A)**

1 minute work
of tap A = 1/60

1 minute work
of tap B = 1/30

(A + B)'s 1
minute work = 1/60+ 1/30 = 1+2/60 = 3/60 = 1/20

Therefore, Time
taken by (A + B) to empty the tank =20 min.

**9. B)**

New rate of
sugar = rupees * Percentage / Quantity = 270/1 * 10/100 = Rs.27/- per kg

Let the original
price of sugar = Rs.x

According to
question,

x *90/100 =27

x=27x100/90

x = Rs.30 per
kg

**10. D)**

Let the
length of the train = x metre According to question,

50+ x /14 =
x/10

500 + 10x =
14x

4x =50

x=125m

We know that,
Speed = Distance/time

125+50/14
=175 / 14 m/s

Speed of the
train 175/14 * 18/ 5 = 45 km