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
Select the correct option:
A) 22%
B) 23%
C) 21%
D) 20%
E) 17%
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%   Option 20%
<result>D</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