The wages earned by Robin is 30% more than that earned by Erica. The wages earned by Charles is 70% more than that earned by Erica. How much percent is the wages earned by Charles more than that earned by Robin? Answers:
A) 18.75%  B) 23%  C) 30%  D) 31%  E) 100%
Let wage of Erica = 10   Wage of Robin = 1.3*10= 
<gadget id="calculator">1.3*10</gadget>
<output>13</output>
13   Wage of Charles= 1.7 *10= 
<gadget id="calculator">1.7 *10</gadget>
<output>17</output>
17   Percentage by which wage earned by Charles is more than that earned by Robin= (17-13)/13 * 100%   = 4/13 * 100%   =31%   Answer 31%
<result>D</result>
The wages earned by Robin is 30% more than that earned by Erica. The wages earned by Charles is 70% more than that earned by Erica. How much percent is the wages earned by Charles more than that earned by Robin?