Question

A shopkeeper purchased 300 bulbs for Rs 12 each. However 50 bulbs were fused and had to be thrown away. The remaining were sold at Rs 15 each. Find the gain or loss %

Answer 1

Step-by-step explanation:

gain 15-12RS =3Rs 250 bulbs remaining

Answer 2

$\bf \red{NOTE:}$ S.P. = Selling Price

C.P. = Cost Price

Given:

Total number of bulbs purchased by the shopkeeper = 300

Cost of 1 bulb = ₹12

Number of bulbs fused = 50

S.P. of remaining bulbs = ₹15 each

To find:

Overall gain or loss percent in the whole transaction.

Solution:

Total number of bulbs purchased by the shopkeeper = 300

Cost of 1 bulb = ₹12

C.P. of 300 bulbs = ₹(300×12)

= ₹3,600

Number of bulbs fused and thrown away = 50

Number of bulbs sold = 300-50

= 250

S.P. of 250 bulbs = ₹(15×250)

= ₹3,750

Now we know that,

Total C.P. of bulbs purchased = ₹3,600

Total S.P. of bulbs sold = ₹3,750

So,

₹3,600 < ₹3,750

C.P. < S.P.

As S.P. is greater than C.P., then it is a profit.

As we know that,

Profit = S.P. - C.P.

Profit = ₹(3,750-3,600)

Profit = ₹150

Now,

Profit% = $\frac {Profit}{C.P.}$×100%

Profit% = $\frac {150}{3600}$×100%

Profit% = 4.1%

Final answer:

The shopkeeper earned a profit of 4.1% (or ₹150) in the overall transaction.