Question

A shopkeeper purchased $200$ bulbs for $Rs.10$ each. However, $5$ bulbs were fused and put them into scrap. The remaining were sold at $Rs.12$ each. Find the gain or loss percent.

Answer 1

No. of bulbs $=200,$ Cost of each bulb $=10$

Total $C.P=200\times 10=2000$

$5$ of them were discarded so only $(200-5)=195$ were sold, at a rate of $12$ per each bulb.

Total $S.P=195\times 12=2340$

Profit or loss $=S.P–C.P=2340–2000=+340$ (Profit)

Percent profit $=\frac{Profit}{C.P}\times 100=\frac{340}{2000}\times 100=17$

$\therefore$ Profit is $Rs.340$ or $17$%.