## Ques 1.

A twice as good a workman as B and they together took 7 days to do a piece of work .B alone can dot it in

(a) 12 days

(b) 18 days

(c) 21 days

(d) None of these

**Ans 1.**21 days

## Ques 2.

A is thrice as good a workman as B. He is able to finish a piece of work in 60 days less than B. Find the time in which they can do it working together.

(a) 25 days

(b) 22 1/2 days

(c) 30 days

(d) 28 days

**Ans 2.**

## Ques 3.

Twenty men can finish a piece of work in 30 days .after how many days should 5 men leave, so that the work may be finished in 35 days?

(a) 18 days

(b) 11 days

(c) 12 days

(d) 15 days

**Ans 3.**

## Ques 4.

Two men and three women working 7 hours a day finish a piece of work in 5 days.Four men and four women working 3 hours a day complete the same work in 7 days . The number of days in which only 7 men working 4 hours a day will finish the work is

(a) 5 days

(b) 6 days

(c) 7 days

(d) 10 days

**Ans 4**.

## Ques 5.

Father is two times faster than his son. If father and son can complete a job in 12 days how long will it take for the son alone to complete the same job ?

(a) 24 days

(b) 36 days

(c) 27 days

(d) 30 days

**Ans 5.**36 days

## Ques 6.

3 men can do a piece of work in 6 days. After 2 days 3 more men joined them. How many days will they take to complete the remaining work ?

(a) 5 days

(b) 4 days

(c) 3 days

(d) 2 days

**Ans 6.**2 days

## Ques 7.

How many days will 12 women take to do a piece of work which 10 men take 15 days to complete, if 3 women do as much work as 2 men?

(a) 18.33 days

(b) 18.55 days

(c) 18.75 days

(d) None of these

**Ans 7**. 18. 75 days

## Ques 8.

If 12 men and 16 boys can do a piece of work in 5 days and 13 men and 24 boys can do it in 4 days, how long will 7 men and 10 boys take do it ?

(a) 10 days

(b) 12 days

(c) 8 1/3 days

(d) 11 1/4 days

**Ans 8.**8 1/3 days'

## Ques 9.

A and B can do a job in 15 days and 10 days respectively .They begin the work together but A leaves after some days and B finishes the remaining work in 5 days . After how many days does A leaves?

(a) 2 days

(b) 3 days

(c) 4 days

(d) 5 days

**Ans 9.**3 days

## Ques 10.

A can do a piece of work in 15 days .If he is joined by B who is 50% more efficient, in what time will A and B finish the work?

(a) 4 days

(b) 8 days

(c) 6 days

(d) 10 days

**Ans 10.**

## Ques 11.

X does 1/4th of a job in 6 days. Y completes rest of the job in 12 days. In how many days could X and Y together have Complete the job ?

(a) 9 3/5 days

(b) 7 1/3 days

(c) 9 days

(d) 8 1/8 days

**Ans 11.**9 3/5 days

## Ques 12.

If 3 workers collect 48 kg of cotton in 4 days, How many kilograms of cotton will 9 workers collect in 2 days?

(a) 216

(b) 108

(c) 72

(d) 36

**Ans 12.**72

Hint : Use the formula : M1D1W2 = W2D2W1

## Ques 13.

A can copy 80 pages in 20 hours. A and B together can copy 135 pages in 27 hours .In What time can B copy 30 pages?

(a) 30 hours

(b) 22.5 hours

(c) 24 hours

(d) 18 hours

**Ans 13.**30 hours