Question

if A alone can do a work in 10 days ,B can do a work in 15 days.bothAandB worked together for some time and remaining work is done by A in 5 days

Answer 1

Answer:

10

×

15

thats

the

answer

.....

..

...

..

Answer 2

Answer:

if A can to that work in 10days means

in 5 days A can complete half of the work

so A and B together has to complete remaining half

so one day work of them =1/10+1/15

=1/6

so in how many days they can complete 1/2 work

=1/2/1/6=3days

so A and B has to work for 3 days