Price of a commodity has increased by 60%. By what per cent must a consumer reduce the consumption of the commodity so as not to increase the expenditure ?
Options:
A . 60%
B . 37.5%
C . 37%
D . 40.5%
Answer: Option B Answer: (b) If the reduction in consumption be x%, then $60 - x - {60x}/100 = 0$ $60 - x - {3x}/5 = 0$ 300 – 5x – 3x = 0 8x = 300 ⇒ x = $300/8 = 37.5%$ Using Rule 8, If the income of a man is A% more than another man, then income of another man is less in comparison to the 1st man by $(A/{(100 + A)}×100)$%
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