40 = 40100×20100=8100=8% 30 = 30100×25100=75100=7.5% and , 50 = 50100×28100=14100=14% ∴ (40 = 8 ...

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Percentage

Question

40% of 20% + 30% of 25% +50% of 28% is equivalent to

29.5%

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28.5%

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30.5%

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None of these

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Solution

The correct option is A 29.5%
40% of 20%
= $\frac{40}{100} \times \frac{20}{100} = \frac{8}{100} = 8 %$

30% of 25%
= $\frac{30}{100} \times \frac{25}{100} = \frac{75}{100} = 7.5 %$

and , 50% of 28%
= $\frac{50}{100} \times \frac{28}{100} = \frac{14}{100} = 14 %$

$∴$ (40% of 20% + 30% of 25% + 50% of 28%)
= 8% + 7.5% + 14% = 29.5%.

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40% of 20% + 30% of 25% +50% of 28% is equivalent to

The correct option is A 29.5%40% of 20% = 40100×20100=8100=8% 30% of 25% = 30100×25100=75100=7.5% and , 50% of 28% = 50100×28100=14100=14% ∴ (40% of 20% + 30% of 25% + 50% of 28%) = 8% + 7.5% + 14% = 29.5%.