Dear Student,
Solution-
Work is done by A in one day =151
By B=121
C=201
Together in 1 Day =151+121+201=604+5+3=6012=51
2 days work = 52
Remaining work = 1−52=53
one day work of A,B ⇒A+B=151+121=604+5=609=203
(A+B) work for t days = 203t=53
t=4 days
A and B will complete the work in 4 days.
Regards,
Daivik Lakshmipathy.