A man's salary increased by 33.33% and then decreased by 25%. His net change in salary is: MCQ with Answer and Explanation
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Question #1
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A number increased by 20% then decreased by 20% gives 192. Original number:
Correct Answer: Option D
Explanation:
x × 1.2 × 0.8 = 0.96x = 192 → x = 200.
x × 1.2 × 0.8 = 0.96x = 192 → x = 200.
This question belongs to:
Maths
Percentage
Question #2
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In a school, 60% are boys and 40% are girls. 20% of boys and 25% of girls get scholarship. What percent of students do not get scholarship?
Correct Answer: Option D
Explanation:
Scholarship boys = 0.6×0.2 = 12% of total, girls = 0.4×0.25 = 10% of total. Total scholarship = 22%, without = 78%.
Scholarship boys = 0.6×0.2 = 12% of total, girls = 0.4×0.25 = 10% of total. Total scholarship = 22%, without = 78%.
This question belongs to:
Maths
Percentage
Question #3
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A train 150 m long crosses a pole in 10 seconds. What is its speed in kmph?
Correct Answer: Option B
Explanation:
Speed = 150/10 = 15 m/s = 15 × 18/5 = 54 kmph.
Speed = 150/10 = 15 m/s = 15 × 18/5 = 54 kmph.
This question belongs to:
Maths
Percentage
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