A school has 480 students, and 55% are girls. How many boys are there?
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If 55% are girls, then 45% are boys.
Forty-five percent of 480 is 216.
Practice Pakistan questions with answers and explanations.
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If 55% are girls, then 45% are boys.
Forty-five percent of 480 is 216.
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The total is 400 people.
Males represent 240/400 × 100 = 60%.
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A full pie chart is 360°.
Thus, 72/360 × 100 = 20%.
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The increase is 25 on a base of 125.
Thus, 25/125 × 100 = 20%.
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Use inclusion-exclusion: 80 + 60 - 20.
This gives 120 people who prefer at least one.
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The two largest shares are 35% and 25%.
Their combined share is 60%.
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Selection without order uses combinations.
5C2 = 5 × 4 ÷ 2 = 10.
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The total production is 210 units.
Dividing by 4 gives 52.5 units.
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The digit sum of 568 is 19, which leaves remainder 1 when divided by 9.
Adding 8 makes the digit sum 27, divisible by 9.
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There are 4 choices for the first digit, then 3, then 2.
Thus, 4 × 3 × 2 = 24.
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Total expenses are Rs. 100,000.
Salaries are Rs. 50,000, which is 50% of the total.
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The largest two-digit multiple of 7 is 7 × 14.
This equals 98.