Discussion
The following pie-chart shows the monthly expenses and savings of a family. If the expenditure on the house rent is ₹18,000 per month, then the sum of the expenditure on food and transport is :
| Head | Share |
|---|---|
| Food | 30% |
| House rent | 15% |
| Savings | 20% |
| Education | 12% |
| Clothes | 5% |
| Transport | 8% |
| Others | 10% |
Answer: D
Food and transport together cost ₹45,600.
House rent is 15% of the total and equals ₹18,000, so the whole monthly budget is:
\[ \begin{aligned} \text{total} &= \frac{18000}{0.15} = 120000 \\ \text{food + transport} &= (30\% + 8\%) \times 120000 \\ &= 0.38 \times 120000 = 45600 \end{aligned} \]
₹36,000 is food alone (30%); ₹45,000 and ₹36,600 do not correspond to the shares in the chart.
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