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1. Pie-charts show the expenses on various heads show the expenses on various heads in construction of a house. Study the pie-chart.

What percentage of the total amount is being spent on cement in 1991?

A. 18%

B. 30%

C. 48%

D. 60%

Solution:

Required percentage =

\frac{108 °}{360 °}

× 100 = 30%

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