Question

hii good evening please solve this question....​

Answer 1

Answer:

10 1/2 days, 10.5 days

Step-by-step explanation:

A's 1 day's work=1/14

B's 1 day's work=1/21

(A+B)'s 7 days work together= 7(1/14+1/21)

=7(3+2/42)

=7(5/42)

=7×5/42

=5/6

Remaining work=1-5/6

=1/6

Remaining work will do by B because A is ill & left work= 1/6×21

=7/2

Work completed in= 7 days+7/2 days

=14+7/2

=21/2

=10 1/2 days

I hope it helps you.