Question

If a commission of $5$% is given on MP of book , the publisher gains $26.66$% . If the commission is increase to $15$% , the gain % is?

• A. $10$
• B. $13.33$
• C. $16.66$
• D. $20$

Answer 1

Answer: (B)

$13.33$

$S.P=M.P-$commission$\times M.P$

$M.P=$Marked price

$S.P=C.P+$gain$\times C.P$

Let$M.P=Rs.100$

for commission$=5\%,S.P=Rs.95$

and gain$=26.66\%,C.P=Rs.75$

for commission$=15\%,M.P=Rs.100$

$S.P=Rs.85$

$C.P=Rs.75$

$⟹$ gain$=\frac{S.P-C.P}{C.P}\times 100=13.33\%$