A dealer purchased 250 bulbs for Rs. 10 each. However, 12 bulbs got fused which she had to throw away. She sold the remaining bulbs at Rs. 12 each. find her gain or loss percent.

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Solution

$C P$ of $1$ bulb $= R s 10$
$C P$ of $250$ bulbs $= R s 2500$
Number of defective bulbs $12$
remaining bulbs $= 250 - 12 = 238$
$S P$ of $1$ bulb $= R s 12$
$S P$ of $238$ bulbs= $R s 2856$
profit $=$ Total SP-CP $= 2856 - 2500 = R s 356$
$p r o f i t % = [\frac{l o s s}{C P} \times 100] = \frac{356}{2500} \times 100 = 14.24 %$

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A dealer purchased 250 bulbs for Rs. 10 each. However, 12 bulbs got fused which she had to throw away. She sold the remaining bulbs at Rs. 12 each. find her gain or loss percent.

CP of 1bulb =Rs10CP of 250bulbs=Rs2500Number of defective bulbs 12remaining bulbs =250−12=238SP of 1bulb =Rs12SP of 238bulbs=Rs2856profit=Total SP-CP=2856−2500=Rs356profit%=[lossCP×100]=3562500×100=14.24%