If the price of tea is increased by 20%, by how much per cent the consumption of tea be reduced so that there is no increase in the expenditure on it ?
Options:
A . 8$1/3$%
B . 20%
C . 83$1/3$%
D . 16$2/3$%
Answer: Option D Answer: (d) Using Rule 8, Reduction in consumption = $(R/{100 + R}× 100)%$ = $(20/120×100)% = 50/3% = 16{2}/3%$
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