What will be the Reduced Price on Item per Kg? If

A reduction of 21% in the price of an item enable a person to buy 3 kg more for ₹ 100. The reduced price of item per kg is

  1. ₹ 5.50
  2. ₹ 7.50
  3. ₹ 10.50
  4. ₹ 7.00
Manish Listener Asked on 16th July 2015 in Maths.
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1 Answer(s)

Answer: (4) Rs.7
Explanation:-
Let be the original price = Rs.X per Kg.
Reduced price = 79X/100 per Kg
100 x 100 /79X – 100/X = 3
10000/79X – 100/X = 3
(10000 – 7900 ) /79X = 3
2100 = 3 x 79X
X = 2100/3 x 79
X = Rs.8.86 per kg.
So, Reduced price = .79 x 8.86 = Rs.7 / kg.
Hence, the answer is (4) 7.

Anurag Mishra Professor Answered on 16th July 2015.
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