You visited us 73 times! Enjoying our articles? Unlock Full Access!

Work Done on & by the Object

A can finish ...

Question

A can finish a work in 54 mins and B can do the same work in 45 mins. B worked for 15 mins and left the job. In how many minutes, can A alone finish the remaining work?

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is E
36

B`s 15 min's work = $\frac{1}{45} \times 15 = \frac{1}{3}$

Remaining work = $1 - \frac{1}{3} = \frac{2}{3}$

Now, $\frac{1}{54}$ work is done by A in 1 min

$\frac{2}{3}$ work is done by A in $54 \times \frac{2}{3} = 36 m i n s$

Suggest Corrections

Similar questions

Q. A can finish a work in

18

days and B can do the same work in

15

days. B worked for

10

days and left the job. In how many days, A alone can finish the remaining work?

X and Y together can finish a work in 15 days. They worked on it for 10 days and then Y left. The remaining work was done by X alone in 15 days. In how many days can X alone finish the work?

A

and

B

together can do a piece of work in

30

days.

A

having worked for

16

days,

B

finishes the remaining work alone in

44

days. In how many days shall

B

finish the whole work alone?

Q. Suppose

A

and

B

together can do a job in

12

days, while

B

alone can finish it in

30

days. In how many days can

A

alone finish the work?

A, B

and

C

can finish a job working alone in

72, 24

and

36

days respectively. In how many days they can finish the job if they worked together?

Join BYJU'S Learning Program

A can finish a work in 54 mins and B can do the same work in 45 mins. B worked for 15 mins and left the job. In how many minutes, can A alone finish the remaining work?

The correct option is E 36 B`s 15 min's work =145×15=13 Remaining work = 1−13=23 Now, 154 work is done by A in 1 min 23 work is done by A in 54×23=36 mins

The correct option is E
36

B`s 15 min's work = $\frac{1}{45} \times 15 = \frac{1}{3}$

Remaining work = $1 - \frac{1}{3} = \frac{2}{3}$

Now, $\frac{1}{54}$ work is done by A in 1 min

$\frac{2}{3}$ work is done by A in $54 \times \frac{2}{3} = 36 m i n s$