If a man lost 10% by selling oranges at the rate of 10 a rupee at how many a rupee must he sell them to gain 50%? Pick one: A) 6 B) 8 C) 7 D) 4 E) 2
90% ---- 10   150% ---- ?     90/150* 10= 
<gadget id="calculator">  90/150* 10</gadget>
<output>6</output>
6   6nswer: 6
<result>A</result>
If a man lost 10% by selling oranges at the rate of 10 a rupee at how many a rupee must he sell them to gain 50%?