Question

Q6
A grocer buys 80 kg of rice at Rs. 13.50 per kg
and mixes it with 120 kg of rice available at Rs.
16 per kg. At what rate per kg should he sell
the mixture to gain 20% on the whole?
Rs. 12
Rs. 18
Rs. 15
Rs. 16
​

Answer 1

Step-by-step explanation:

cp of 80 kg rice = 80 × 13•50 = ₹ 1080

cp of 12o kg rice = 120 × 16 = ₹ 1920

Total cp of (80+120) 200 kg rice = ₹ 3000

now

SP = (100+ 20/ 100) × 3000

= (120/100) × 3000

= 6/5 × 3000

= ₹ 3600

therefore

sp > cp, gain = 3600 - 3000 = ₹ 600

gain % = 600/3000 × 100

= 6/30×100

= 20 % Ans.