A and B can do a job in 7 days. A is $${\text{1}}\frac{3}{4}$$times as efficient as B. The same job can be done by A alone in ?

$12\frac{1}{4}\,{\text{days}}$$

$16\frac{1}{3}\,{\text{days}}$$

A and B can do a job in 7 days. A is $${\text{1}}\frac{3}{4}$$times as

1.	A and B can do a job in 7 days. A is $${\text{1}}\frac{3}{4}$$times as efficient as B. The same job can be done by A alone in ?
A.	$9\frac{1}{3}\,{\text{days}}$$
B.	${\text{11 days}}$$
C.	$12\frac{1}{4}\,{\text{days}}$$
D.	$16\frac{1}{3}\,{\text{days}}$$
Answer» C. $12\frac{1}{4}\,{\text{days}}$$