If a man lost 7% by selling oranges at the rate of 21 a rupee at how many a rupee must he sell them to gain 42%?  Choose the correct choice from the following options
A) 12.75	B) 11.75	C) 8.75	D) 15.75	E) 13.75
93% ---- 21   142% ---- ?   93/142 * 21 = 13.75   Answer: 13.75
<result>E</result>
If a man lost 7% by selling oranges at the rate of 21 a rupee at how many a rupee must he sell them to gain 42%?