Question

3. The price of coffee is increased by 60%. By what percentage should a family decrease the
consumption of coffee, so that there is no change in the expenditure?​

Answer 1

37.5% should a family decrease the consumption of coffee, so that there is no change in the expenditure.

Step-by-step explanation:

Let the price of coffee is increased by r%, the percentage of coffee consumption should decrease,

$(\frac{r}{r+100}\times 100)$

Here, r = 60%

Percentage of coffee consumption should decrease = $(\frac{60}{60+100}\times 100)$

= $\frac{60}{160}\times 100$

= 37.5%

Hence, 37.5% should a family decrease the consumption of coffee, so that there is no change in the expenditure.

Answer 2

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