Question

Sandesh sold 15 kg apples for Rs. 2100 and made a profit of 12percent . At what price per kg should be sold to gain 20 percent ?

Answer 1

Step-by-step explanation:

SP - CP /CP ×100 = 12

SP - 2100/2100 × 100 = 12

SP - 2100/ 21 = 12

SP- 2100 = 12×21

SP = 252+2100 = 2352

2352 - CP /CP ×100 = 20

2352 - CP /CP = 20/100

2352 - CP/CP = 2/10

2352 - CP = 2CP/10

23520 - 10CP = 2CP

23520 = 12CP

CP = 23520/12 = 1960

15 kg = 1960

1 kg = 1960/ 15 = 132

He should buy Rs 132 per kg!!