21 .

The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?

The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?

A.4

B. 8

C. 16

D.None of these

View AnswerAns: 8
22 .

The sum of the present ages of a father and his son is 60 years. Six years ago, fathers age was five times the age of the son. After 6 years, sons age will be:

The sum of the present ages of a father and his son is 60 years. Six years ago, fathers age was five times the age of the son. After 6 years, sons age will be:

A.12 years

B. 14 years

C. 18 years

D.20 years

View AnswerAns: 20 years
23 .

Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

A.57%

B. 60%

C. 65%

D.90%

View AnswerAns: 57%
24 .

In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?

In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?

A.30%

B. 70%

C. 100%

D.250%

View AnswerAns: 70%
25 .

A flagstaff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:

A flagstaff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:

A.10 m

B. 12.5 m

C. 17.5 m

D.21.25 m

View AnswerAns: 12.5 m