Percentage MCQ Set 5

PERCENTAGE MCQ SET 5

Q1. If the price of petrol is increased by 28% , by what percentage should the consumption be decreased by the consumer . If the expenditure on petrol remains unchanged? (Correct to 2 decimal places)

(a)12.35%

(b)21.88%

(c)20.25%

(d)25.75%

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Answer: B

Q2. If side of a square is increased by 10% then find % increase in its perimeter & diagonal

(a)10% , 10%

(b)10% , 21%

(c)20% , 21%

(d)20% , 20%

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Answer: A

Q3. If radius of a circle is increased by 20% then find % increase in its circumference .

(a)10%

(b)20%

(c)30%

(d)40%

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Answer: B

Q4. If each side if a cube is decreased by 12% , then the percentage decrease in its surface area is :

(a)25.66%

(b)28.23%

(c)22.56%

(d)26.54%

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Answer: A

Q5. If the length of a rectangle is increased by 12% and the breadth is decreased by 8% , the net effect on the area is :

(a)Increase by 3.04%

(b)Increase by 2.6%

(c)Decrease by 3.04%

(d)Decrease by 2.6%

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Answer: A

Q6. The length and the breadth of a rectangle are made to increase and decrease , respectively , by 8% and 10% . What is the percentage increase of decrease in its area?

(a)Decrease by 108%

(b)Increase by 1.8%

(c)Increase by 2.8%

(d)Decrease by 2.8%

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Answer: D

Q7. Length and breadth of a rectangle are increased by 10% and 20% respectively . What will be the percentage increase in the area of rectangle ?

(a)21% increase

(b)28% increase

(c)44% increase

(d)32% increase

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 Answer: C

Q8. The radius of a circle is increased by 300% . Then its area will increase by what percent?

(a)800% increase

(b)900% increase

(c)1500% increase

(d)1600% increase

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Answer: C

Q9. The radius of a hemisphere is increased by 19% then what will be effect on total surface area and lateral surface area .

(a)41.61% decrease

(b)41.61% increase

(c)45 5/6% decrease

(d)44% decrease

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Answer: B

Q10. If the radius of a cylinder is decreased by 16 percent , then by how much percent its height must be increased , so that the volume of the cylinder remains same ?

(a)32.96 percent

(b)41.72 percent

(c)45.28 percent

(d)36.43 percent

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Answer: B