In a bag, 60% are red balls, 30% are blue balls, and the rest are green balls. If 5% of red, 10% of blue, and 20% of green balls are defective, what percent of the total balls are defective? MCQ with Answer and Explanation

Question Report Error

In a bag, 60% are red balls, 30% are blue balls, and the rest are green balls. If 5% of red, 10% of blue, and 20% of green balls are defective, what percent of the total balls are defective?

A. 7.5%

B. 8%

C. 7%

D. 8.5%

Answer: Option B

Solution (By JKExamLibrary)

Red=60, Blue=30, Green=10. Defective: Red 0.05×60=3, Blue 0.1×30=3, Green 0.2×10=2. Total defective=8%. So answer 8%.

This question belongs to: Maths Percentage

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Percentage Questions

Question #1 Report Error

25% of A = 40% of B = 1/5 of C. Find A:B:C.

A. 8:5:10

B. 8:10:5

C. 5:8:10

D. 10:8:5

View Answer & Solution Discuss

Correct Answer: Option A

Explanation:
Let 0.25A = 0.4B = 0.2C = k. Then A=4k, B=2.5k, C=5k. Multiply by 2: A:B:C = 8:5:10.

This question belongs to: Maths Percentage

Question #2 Report Error

What is 15% of 60?

A. 12

B. 6

C. 15

D. 9

View Answer & Solution Discuss

Correct Answer: Option D

Explanation:
15% of 60 = (15 / 100) * 60 = 9.

This question belongs to: Maths Percentage

Question #3 Report Error

If 15% of x is the same as 20% of y, then x:y is:

A. 3:5

B. 3:4

C. 4:3

D. 5:3

View Answer & Solution Discuss

Correct Answer: Option C

Explanation:
0.15x = 0.2y → x/y = 0.2/0.15 = 4/3 → 4:3.

This question belongs to: Maths Percentage

Explore All Percentage MCQs