Question

Reduction of a rupee in the price of onion makes the possibility of buying one more kg of onion for Rs.56. Find
the original price of the onion per kg?
(a) 1
(b) 7,-8
(c) 7
(d) 8
​

Answer 1

Answer:

I thinks its 7 ,-8answer

follow me

Answer 2

Original price of onion is Rs 8 per kg

Solution:

Let the price of sugar = x per kg

New price will be = x - 1 per kg

Reduction of a rupee in the price of onion makes the possibility of buying one more kg of onion for Rs.56

Therefore,

$\frac{56}{x - 1 } - \frac{56}{x} = 1\\\\56x - 56x +56 = x^2 - x\\\\x^2 - x - 56 = 0\\\\(x- 8)(x+7) = 0\\\\x = 8 \text{ or } x = -7$

Ignore the negative value

Therefore, Original price of onion is Rs 8 per kg

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