Heera bought $25 k g$ of rice at $R s 48 p e r k g$ and $35 k g$ of rice at $R s 60 p e r k g$ . He sold the mixture at $R s 66 p e r k g$ . Find his gain per cent.

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Solution

$\to$ Total cost price (C.P)
$= (25 \times 48) + (35 \times 60)$
$= 100 \times 12 + 2100$
$= 3300$
Total selling price(S.P)
$= 66 \times (25 + 35)$
$= 66 \times 60 = 3960$
$\Rightarrow$ Profit percentage
$= \frac{S . P - C . P}{C . P} \times 100$
$= \frac{3960 - 3300}{3300} \times 100$
$= \frac{660}{3300} \times 100 = 20$ %

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Heera bought 25 kg of rice at Rs 48 per kg and 35 kg of rice at Rs 60 per kg. He sold the mixture at Rs 66 per kg. Find his gain per cent.

→ Total cost price (C.P)=(25×48)+(35×60)=100×12+2100=3300Total selling price(S.P)=66×(25+35)=66×60=3960⇒ Profit percentage =S.P−C.PC.P×100=3960−33003300×100=6603300×100=20%

Heera bought $25 k g$ of rice at $R s 48 p e r k g$ and $35 k g$ of rice at $R s 60 p e r k g$ . He sold the mixture at $R s 66 p e r k g$ . Find his gain per cent.