Question

solve the problem no. 4​

Answer 1

Step-by-step explanation:

A one day work=1/12

B one day work =1/15

(A+B) one day work=1/12+1/15

=5+4/60=9/60

(A+B) 5 day work =5*9/60=9/12=3/4

remaining work=1-3/4=1/4

A complete work =1/4/1/12=12/4=3 days