Question

a shop keeper purchased 200 bulbs for rupees 10 each . however 5 bulbs were fused and put them into scrap . the remaining were sold at rupees 12 each . find the gain or loss percent

Answer 1

He brought200 bulbs for Rs. 10 each . So total Ra =2000 But eventually we knew that 5 bulb are fused , so he had a loss of Rs . 50  Noww he sold 195 bulb in cost of Ra. 12 , so total SP = 195×12=2340 . There he had a loss of Rs . 50 so Gain is 2290-2000=290. Gain % = 290/2000×100 =14.5

Answer 2

$<u>Answer :</u>$$<b><i>$

Number of bulbs purchased at Rs. 10 = 200

Purchase price = 200 × 10 = Rs. 2000

If 5 bulbs were defective, remaining bulbs = 195

Sale price = 12

Sale price of 195 bulbs = 195×12 = Rs. 2340

Profit = sale price – purchase price

= 2340 – 2000

= Rs. 340

$\sf\implies\dfrac{340}{2000}×100$

= 17%

∴ The gain percent is 17%