Let the selling price be 100 According to the question The second at a rate of 20% of the first =(20% of 15 ) ⇒(20∕100×15)=3% Now, single discount on two successive discount =(
a+b−ab
100
) ⇒(
15+3−15×3
100
) ⇒(18−0.45)=17.55% Now, (100−17.55)%=82.45% Selling price =(82.45% of 5320) ⇒(