Question

7. A reduction of 21% in the price of wheat enables a person to buy 3.5 kg more for
100. What is the reduced price per kg ?​

Answer 1

Let original rate = x per kg.

Reduction of 21% in the price.

New rate = 79% of Rs. x per kg

= (79 * x)/100

Now,

=> {(100/79x)/100} - {100/x} = 3.5

=> 10000/79x - 100/x = 3.5

=> 10000 - 7900 = 3.5 * 79x

=> x = 2100/(3.5 * 79)

Reduced rate = (79/100) * 2100/(3.5 * 79)

=> 6

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