Question

You go shopping and you use two 20% off coupons. You think this might equal 40% off but it does not. Calculate what percent the actual discount is.

Answer 1

Answer:

The actual discount will be 36% off

$36\text{\%}$

Explanation:

Given that you use two 20% off coupon.

$\begin{gathered} 20\text{ \% off will be;} \\ 100-20\text{\%} \\ =80\text{\%} \\ =0.80 \end{gathered}$

double 20% off coupon will give;

$0.80\times0.80=0.64$$0.64=64\text{\%}$

Which means you will only pay 64%.

That is the amount off is;

$100\text{\% - 64\% = 36\%}$

Therefore, the actual discount will be 36% off

$36\text{\%}$