Question

A can do a half of certain work in 70 days and b one third of the same in 35 days. They together will do the whole work in.

Answer 1

35 days is the correct answer , mark as brainliast answer

Answer 2

Answer:

$\frac{35}{6}$

Step-by-step explanation:

A can do $\frac{1}{2}$ work in days = 7

A can do 1 work in days = $\frac{7}{\frac{1}{2}}=14$

A can do work in 1 day = $\frac{1}{14}$

B can do $\frac{1}{3}$ work in days = 35

B can do 1 work in days = $\frac{35}{\frac{1}{3}}=105$

B can do $\frac{1}{3}$ work in days = 35

B can do work in 1 day = $\frac{1}{35}$

Together they can do work in 1 day = $\frac{1}{7}+\frac{1}{35} = \frac{5+1}{35}=\frac{6}{35}$

They can do together $\frac{6}{35}$ work in days = 1

They can do together 1 work in days = $\frac{35}{6}$

Hence they can complete whole work in $\frac{35}{6}$ days