Practice Quantitative Ability questions with answers and explanations.
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The sum is 76 and there are 4 values, so the average is 19.
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15% of 100 = 15/100 × 100 = 15.
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90 + 10 = 100.
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21 + 8 = 29.
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The sum is 174 and there are 6 values, so the average is 29.
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The sum is 105 and there are 5 values, so the average is 21.
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15 + 6 = 21.
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5% of 230 = 5/100 × 230 = 11.
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Divide both sides by 4: x = 36/4 = 9.
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Divide both sides by 4: x = 20/4 = 5.
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25% of 220 = 25/100 × 220 = 55.
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15% of 250 = 15/100 × 250 = 37.
