Question

Find which of the following discount series is better for the customer :
$\left(i\right)30\%,20\%,$ and $10\%;$
$\left(ii\right)25\%,20\%,$ and $15\%.$

Answer 1

(1) M.P is Rs. $100$
so selling price after $30\%$ discount $=$ $100-30=$ Rs. $70$
There after selling price $20\%$ discount =$\frac{70\times 80}{100}=$ Rs. $56$

There after selling price $10\%$ discount =$\frac{90\times 56}{100}=$ Rs. $50.40$

(ii)1) M.P is Rs. $100$
so selling price after $25\%$ discount =$100-25=$ Rs. $75$
There after selling price $20$% discount =$\frac{75\times 80}{100}=$ Rs. $60$

There after selling price $15\%$ discount $=$ $\frac{85\times 60}{100}=$ Rs. $51$
So, costumer get lower cost on (i) option is better