A does 20% less work than B. If A can complete a piece of work in$$7\frac{1}{2}$$ hours, then B can do it in ?

${\text{5}}\frac{1}{2}{\text{ hours}}$$

${\text{6}}\frac{1}{2}{\text{ hours}}$$

A does 20% less work than B. If A can complete a piece of work in$$7\f

1.	A does 20% less work than B. If A can complete a piece of work in$$7\frac{1}{2}$$ hours, then B can do it in ?
A.	${\text{6}}\frac{1}{2}{\text{ hours}}$$
B.	hours
C.	${\text{5}}\frac{1}{2}{\text{ hours}}$$
D.	hours
Answer» C. ${\text{5}}\frac{1}{2}{\text{ hours}}$$