Question

B can complere a work in 30 days if A is 50% more effiicient than B and C is less sufficient than B how many days they completed work

Answer 1

15 the days taken for him

Answer 2

ANSWER:
Excluding the work of C because the efficiency of C is not given properly.
==>A:B=100:150
==>2:3::x:30.
==>x=20days.(B alone completes the work).
==>working together they will complete in 1/20+1/30=12 days.