Question: 31 -

A man’s basic pay for a 40 hour week is Rs. 20 overtime is paid for at 25 % above the basic rate, in a certain week he worked overtime and his total wage was Rs. 25. He therefore worked for a total of: 

45 hours

47 hours

48 hours

50 hours

Answer:

48 hours

Solution:

Basic rate per hour = Re. (20/40) = Re. 1/2. 
Overtime per hour = 125 % of Re. 1/2 = Re.5/8. 
He worked x hours overtime. 
Then 20 + 5/8 x = 25 (or) = 5/8 x = 5 
X = 40/5 = 8 hours 
=> he worked in all for (40 + 8) = 48 hours. 

Question: 32 -

Fresh fruit contains 68% water and dry fruit contains 20% water. How much dry fruit can be obtained from 100 kg of fresh fruits ?

30

50

40

20

Answer:

40

Solution:

Fruit % in fresh fruit = Fruit% in dry fruit 
Therefore, (32/100) x 100 = (80/100 ) x y 
we get, y = 40 kg.

Question: 33 -

What percent decrease in salaries would exactly cancel out the 20 percent increase ?

(14 +1/3)%

(13 + 4/5)%

(15 + 2/3)% 

(16 + 2/3) % 

Answer:

(16 + 2/3) % 

Solution:

Let the original salary = Rs. 100. New's salary = Rs.120.
Decrease on 120 = 20. Decrease on 100 = [(20/120)*100]% = (16 + 2/3) %.

Question: 34 -

If the price of sugar rises from Rs. 6 per kg to Rs. 7.50 per kg, a person, to have no increase in his expenditure on sugar, will have to reduce his consumption of sugar by

25

15

20

30

Answer:

20

Solution:

original consumption = 100 kg and new consumption = x kg, 
So, 100 * 6 = x * 7.50 => x = 80kg 
Reduction in consumption = 20%.

Question: 35 -

An agent, gets a commission of 2.5% on the sales of cloth. If on a certain day, he gets Rs. 12.50 as commission, the cloth sold through him on that day is worth

500

700

900

300

Answer:

500

Solution:

Let the total sale be Rs. x.
Then, 2.5%. of x = 12.50
=> (25/100 * 1/100 * x) =  125/10
=> x = 500.