Instructions

The pie-chart given below show usage of materials in a construction of a house. Study the chart and answers the questions :

Question 50

The average of percentages of steel, cement and miscellaneous items used in the construction is

Solution

Usage of steel, cement and miscellaneous items in the construction

= $$36^\circ + 72^\circ + 108^\circ = 216^\circ$$

Average usage of the three = $$\frac{216^\circ}{3}=72^\circ$$

$$\therefore$$ Average of percentages of steel, cement and miscellaneous items used in the construction

= $$\frac{72}{360} \times 100 = \frac{100}{5}=20\%$$

=> Ans - (C)

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