After getting 2 successive discounts, a shirt with a list price of Rs 150 is available at Rs 105. If the second discount is 12.55,find the first discount Choose the correct choice from the following options
A) 38% B) 15% C) 20% D) 12% E) 36%
Let the first discount be x%   Then,87.5% of (100-x)% of 150= 105   87.5/100*(100-x)/100*450=150=&gt;105=&gt;100-x=(105*100*100)/(150*87.5)= 
<gadget id="calculator">(105*100*100)/(150*87.5)</gadget>
<output>80</output>
80   x=(100-80)= 
<gadget id="calculator">(100-80)</gadget>
<output>20</output>
20   first discount= 20%   Ans: 20%
<result>C</result>
After getting 2 successive discounts, a shirt with a list price of Rs 150 is available at Rs 105. If the second discount is 12.55,find the first discount