Question

solve maths question

Answer 1

In one day Both will do part of work

1/16 +1/20
5+4/80
9/80

9/80

so in 4 days they will 9/80 ×4=9/20

Work left 1- 9/20 =11/20


B do 1 work in 16 days

so he will do 11/20 in 16 ×11/20 =44/5= 8.8 days


B will take 8.8 days to complete the work.
$8.8$