Question

4. A and B can do a work in 12 and 20
days respectively. If, after they work at it
together for some time, c, who can do the
whole work in 10 days, finishes it in 2
days, how long did A and B work?
o days​

Answer 1

Answer:-

A's one day work = 120

A's 4days work = 120×4=15 part

Remaining part = 1−15=45

B's one day work = 112

(A+B)'s one day work = 120+112=860=215

45 part can be finished by A and B in

= 45×152 = 6 days

The complete work will be finished in 6+4 = 10 days.

hope it is helpful for you ✌