A reduction of 20% in the price of rice enables a person to purchase 1

1.	A reduction of 20% in the price of rice enables a person to purchase 10 kg more in Rs.600. Find the price of rice per kg before and after reduction of price.1. Rs. 25 and Rs. 202. Rs. 15 and Rs. 123. Rs. 30 and Rs. 24 4. Rs. 10 and Rs. 8
Answer» Correct Answer - Option 2 : Rs. 15 and Rs. 12 Given: A reduction of 20% in the price of rice enables a person to purchase 10 kg more in Rs. 600. Calculation: Let the price per kg was Rs. 100x and after 20% reduction new price becomes Rs. 80x According to question, New quantity rice – old quantity rice = 10 kg ⇒ 600/80x – 600/100x = 10 ⇒ 120/80x = 10 ⇒ x = 3/20 Original price = 100x = Rs. (100 × 3/20) = Rs. 15 per kg New price = 80x = Rs. (80 × 3/20) = Rs. 12 per kg ∴ Original price and the new price are Rs. 15/kg and Rs. 12/kg respectively.

A reduction of 20% in the price of rice enables a person to purchase 10 kg more in Rs.600. Find the price of rice per kg before and after reduction of price.1. Rs. 25 and Rs. 202. Rs. 15 and Rs. 123. Rs. 30 and Rs. 24 4. Rs. 10 and Rs. 8

Answer» Correct Answer - Option 2 : Rs. 15 and Rs. 12

Given:

A reduction of 20% in the price of rice enables a person to purchase 10 kg more in Rs. 600.

Calculation:

Let the price per kg was Rs. 100x and after 20% reduction new price becomes Rs. 80x

According to question,

New quantity rice – old quantity rice = 10 kg

⇒ 600/80x – 600/100x = 10

⇒ 120/80x = 10

⇒ x = 3/20

Original price = 100x = Rs. (100 × 3/20) = Rs. 15 per kg

New price = 80x = Rs. (80 × 3/20) = Rs. 12 per kg

∴ Original price and the new price are Rs. 15/kg and Rs. 12/kg respectively.

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