Question

Could you please help me with this problem? It’s a bit blurry. From a computer screen.

Answer 1

First find out the selling price of the clarinet, this is:

Discounted price / ( 1 - discount rate)

$\frac{93.60}{(1-20\%)}=\frac{93.60}{(1-0.20)}=\frac{93.60}{0.80}=117$

This selling price is 30% more than what the store paid so the price the store paid was:

$\frac{117}{1+0.30}=\frac{117}{1.30}=90$

Answer: the store pay for the clarinet $90