Latest self Aptitude Question SOLUTION: Arun and Tarun can do a work in 10 days.After 4 days tarun went to his village.How many days are required to complete the remaining work by Arun alone.Arun can do the work alone i

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(#M40010581) SELF question Work and time Keep an EYE

Arun and Tarun can do a work in 10 days.After 4 days tarun went to his village.How many days are required to complete the remaining work by Arun alone.Arun can do the work alone in 30 days.

Divyarajsinh Solanki (12 years ago)

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Meena  (12 years ago)

18 days.

They together completed 4/10 work in 4 days.
balance 6/10 work will be completed by Arun alone in 30*6/10 = 18 days.

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Pankaj Agarwal  (12 years ago)

In 1 day,Arun can do 1/30th of his work.
In 1 day,Arun & Tarun can do 1/10th of work.
so in 4 days=4/10th of work

hence, remaining work=6/10th of work

1/30th of work arun do in 1 Day
1 30 days
6/10th " " 30*6/10=18 days

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Madhu  (12 years ago)

a+t 's 1 day work=1/10
a+t's 4 day work=4/10
after 4 day tarun left,so
remining work is 6/10,so 30*(6/10)
18 days needed for arun alone to do work

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ankur trivedi  (12 years ago)

let arun's one day is 1/x and tarun's one day work is 1/y
.so total worked completed of one day by both 1/10.ie 1/x+1/y=1/10.
now in 4 days completed work by both will be 4/10.
now the remaining work will be 1-4/10=6/10.
and this 6/10 work will be completed only by arun .and arun can do the same work in 30 days alone .so 6/10 work will be completed by 6/10*30=18 day.

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