Aptitude - Time & Work Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Simple Interest. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - A can do a bit of work in 8 hours while B along can do it in 12 hours. Both A and B cooperating can complete the work in:

A - 10 hours

B - 4 hours

C - 21/4 hours

D - 24/5 hours

Answer : D

Explanation

A's 1 hour work = 1/8, B 's 1 hour work =  1/12
(A+B)'s 1 hour work =  (1/8 +1/12) = 5/24
Hence, A and B together can finish it in 24/5 hours

Q 2 - 3 men or 5 ladies can do a work in 12 days. To what extent will 6 men and 5 ladies take to complete the work?

A - 4 days

B - 10 days

C - 15 days

D - 20 days

Answer : A

Explanation

3 men =5 women ⇒(6 men +5 women )=15 women
Now, 5 women can do it in 12 days.
1 woman can do it in (12*5) days.
15 women can do it in 12*5/15days=4days.

Q 3 - A can do a bit of work in 24 days while B alone can do it in 16 days. With the help of C, they can complete the work in 8 days. C alone can take every necessary step in

A - 32 days

B - 36 days

C - 40 days

D - 48 days

Answer : D

Explanation

(A+B)'s 1 day work = (1/24+1/16)=  5/48
(A+B+C) 's 1 day work = 1/8
C's 1 day work = (1/8- 5/48) = 1/48
∴C alone can finish the work in 48 days.

Q 4 - A can make a sure showing in 25 days which B alone can do in 20 days. A began the work and was joined by B following 10 days. The work went on for

A - 25/2 days

B - 128/9 days

C - 15 days

D - 50/3 days

Answer : D

Explanation

A's 10 days work = (1/25*10)= 2/5 ; remaining work = (1-2/5) = 3/5
(A+B)'s 1 day work = (1/25+1/20) = 9/100
9/100 work is finished by (A+B) In 1 day.
3/5 work is finished by (A+B) in (100/9* 3/5) days = 20/3 days
Total time taken = (10+ 20/3) = 50/3 days

Q 5 - A does half as much work as B in three ?fourth of the time. On the off chance that together they take 18 days to finish the work, the amount of time might B takes to do it?

A - 30 days

B - 35 days

C - 40 days

D - none of these

Answer : A

Explanation

Let the whole work be done by B in x days.
In 3/4 th of time, work done by A = 1/2
1/2 works is done by A in 3/4 x days.
Whole work is done by A in (2* 3x/4) days = 3x/2 days
∴1/x + 2/3x = 1/18 ⇒18+ 12= x ⇒ x= 30

Q 6 - 9 youngsters can finish a bit of work in 360 days. 18 men can finish the same work of piece in 72 days and 12 ladies can finish it in 162 days. In how long can 4 men, 12 ladies and 10 kids together finish the bit of work?

A - 68 days

B - 81 days

C - 96 days

D - 124 days

Answer : B

Explanation

9 children 1 day work = 1/360 ⇒1 child 1 day work = 1/3240
18 man 1 day work = 1/72 ⇒1 man 1 day work = 1/1296
12 women 1 day work = 1/162 ⇒1 women 1 day work = 1/1944
(4men +12 women +10 children) 1 day work = (4/1296+ 12/1944+10/3240)
= (1/324+1/162+1/324) = 4/324 = 1/81
Hence they can finish the work in 81 days.

Q 7 - 10 ladies can finish a work in 8 days and 10 youngsters take 12 days to finish the work. How long will 6 ladies and 3 kids together take to finish the work?

A - 7

B - 10

C - 9

D - 12

Answer : B

Explanation

10 women 1 days work =1/8 ⇒1 women 1 day work = 1/80
10 children 1 day work = 1/12 ⇒1 children 1 day work = 1/120
(6 women + 3 children) 1 day work = (6/80 +3/120) = (3/40+ 1/40) = 4/40 = 1/10
So, they can finish the work in 10 days.

Q 8 - 10 men can complete a bit of work in 10 days, though it takes 12 ladies to complete it in 10 days. On the off chance that 15 men and 6 ladies attempt to finish the work, how long will they take to finish it?

A - 2 days

B - 4 days

C - 5 days

D - 11 days

Answer : C

Explanation

10 men = 12 women ⇒1 women = 6/5 women
(15 men + 6 women)= (15* 6/5+ 6) = 24 women
12 women can do a piece of work in 10 days.
∴ 24 women will do it in (10*12)/24 = 5 days

Q 9 - A does 4/5th of a work in 20 days. He then assembles in B and they complete the remaining work in 3 days. To what extent B alone would take to do the entire work?

A - 23 days

B - 37 days

C - 75/2 days

D - 40 days

Answer : C

Explanation

4/5 work is done by A in 20 days.
Whole work is done by A in (20*5/4) days =25 days.
1/5th work is done by (A+B) in 3 days.
Whole work is done by (A+B) in (3*5) days=15 days.
B 1 days work= (1/15-1/25) =2/75.
B alone can finish the work in 75/2 days.

Q 10 - A works twice as quick as B. On the off chance that the two can together complete a bit of work in 12 days, then B alone can do it in

A - 24 days

B - 27 days

C - 36 days

D - 48 days

Answer : C

Explanation

Let B 1 day work =x. Then , A 1 days work=2x
X+2x=1/12⇒3x=1/12⇒x=1/36.
B 1 day work=1/36.
Hence B alone can finish the work in 36 days.


aptitude_time_work.htm

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