Wage decreased 25% then increased 25%. Loss %: MCQ with Answer and Explanation

Wage decreased 25% then increased 25%. Loss %:

A. 6.25%

B. 7.5%

C. 0%

D. 5%

Answer: Option A

0.75×1.25 = 0.9375, loss 6.25%.

This question belongs to: Maths Percentage

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Question #1 Report Error

To pass need 45%. A student gets 54 marks and fails by 36. Max marks:

A. 250

B. 200

C. 180

D. 220

Correct Answer: Option B

Explanation:
Pass = 90, 45% M = 90 → M = 200.

This question belongs to: Maths Percentage

Question #2 Report Error

The ratio of the ages of A and B is 5:7. After 10 years, the ratio will be 7:9. Find the present age of A.

A. 30 years

B. 20 years

C. 35 years

D. 25 years

Correct Answer: Option D

Explanation:
Let ages 5x, 7x. (5x+10)/(7x+10) = 7/9 → 45x+90 = 49x+70 → 4x=20 → x=5, A=25.

This question belongs to: Maths Percentage

Question #3 Report Error

A number increased by 30% then decreased by 30% gives 273. Original number:

A. 310

B. 280

C. 300

D. 290

Correct Answer: Option C

Explanation:
x × 1.3 × 0.7 = 0.91x = 273 → x = 300.

This question belongs to: Maths Percentage