Maths : Percentage QA

10 percentage questions with solutions.

1. Find 25% of 200.

Solution:
25% of 200 

= (25/100) x 200

= 50

Explanation:
Percentage means “per hundred.”
So we multiply the number by the given percentage and divide by 100.

2. Find 10% of 350.

Solution:
10% of 350 =

= (10/100) X 350  
= 35

Explanation:
10% means one-tenth of a quantity.

3. Find 15% of 80.

Solution:
15% of 80 =

= (15/100) X 80  
= 12

Explanation:
Convert the percentage into a fraction and multiply.

4. What percentage of 50 is 20?

Solution:
Percentage = (x/100) x 50 = 20

X = (20/50) x 100
= 40%

Explanation:
Divide the part by the whole and multiply by 100.

5. What percentage of 400 is 60?

Solution:
Percentage = (60/400) x 100
= 15%

Explanation:
This shows how much 60 is out of 400.

6. A student scored 45 marks out of 60. Find the percentage of marks obtained.

Solution:
Percentage = (45/60) x 100
= 75%

Explanation:
Marks obtained ÷ Total marks × 100 gives the percentage.

7. In a class of 40 students, 30 students passed. Find the percentage of students who passed.

Solution:
Percentage = (30/40) x 100
= 75%

Explanation:
Number of students passed ÷ Total students × 100.

8. A shopkeeper gives a discount of 20% on an article marked at ₹500. Find the amount of discount.

Solution:
Discount = (20/100) x 500
= ₹100

Explanation:
Discount percentage is calculated on the marked price.

9. The price of a book is increased from ₹200 to ₹250. Find the percentage increase.

Solution:
Increase = 250 − 200 = 50
Percentage increase = (50/200) x 100
= 25%

Explanation:
Percentage increase = Increase ÷ Original price × 100.

10. The price of a shirt is reduced from ₹800 to ₹680. Find the percentage decrease.

Solution:
Decrease = 800 − 680 = 120
Percentage decrease = (120/800) x 100
= 15%

Explanation:
Percentage decrease = Decrease ÷ Original price × 100.