Question

A single discount, equivalent to successive discount of $40\%$ and $30\%$ is?

• A. $55\%$
• B. $56\%$
• C. $57\%$
• D. $58\%$

Answer 1

The correct option is D $58\%$

Let Successive discount be x% and y%

then total discount is

Total Discount = (x+y-xy/100)%

Therefore,

total discount = (40+30-40*30/100)%

= (70-12)%

= 58%