Question

a reduction of 15% in coffee enable a person to buy 2 kgs. more rs.30. find the original price​

Answer 1

Answer:

3/2

Step-by-step explanation:

A reduction of 10% in the price enables a person to buy 2 kg more wheat for Rs 30.Find the reduced and the original price of wheat?

Let the original price of wheat be Rs x per kg.

Reduced rate = Rs(90/100)x = Rs (9/10)x per kg.

So 30/{(9/10)x} - 30/x = 2

300/9x - 30/x = 2

300 -270 = 18 x

30 = 18 x

x = 30/18 = 5/3

Reduced price = (90/100)(5/3) = (9/10)(5/3) = 45/30 = 3/2

So the original price of wheat = Rs 5/3

and the reduced price = Rs 3/2

Answer 2

Answer:

Let the original price of wheat be Rs x per kg.

Reduced rate = Rs(90/100)x = Rs (9/10)x per kg.

So 30/{(9/10)x} - 30/x = 2

300/9x - 30/x = 2

300 -270 = 18 x

30 = 18 x

x = 30/18 = 5/3

Reduced price = (90/100)(5/3) = (9/10)(5/3) = 45/30 = 3/2

So the original price of wheat = Rs 5/3

Step-by-step explanation:

30/(3/2) = 20

30/(5/3) = 90/5 = 18

So 2 kgs more for the reduced price.

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