To pass an exam, 40% is required. A student got 150 marks and failed by 30 marks. Maximum marks are: MCQ with Answer and Explanation

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To pass an exam, 40% is required. A student got 150 marks and failed by 30 marks. Maximum marks are:

A. 400

B. 500

C. 550

D. 450

Answer: Option D

Solution (By JKSSB Mock Tests)

Pass marks = 150 + 30 = 180. 40% of Max = 180 → Max = 180/0.4 = 450.

This question belongs to: Maths Percentage

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Question #1

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A shopkeeper sells an article at 10% profit. Had he bought it at 20% less and sold it for Rs. 12 less, he would have gained 30%. Find the cost price.

A. Rs. 220

B. Rs. 150

C. Rs. 180

D. Rs. 200

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Correct Answer: Option D

Explanation:
CP=x, SP=1.1x. New CP=0.8x, new SP=1.1x-12 = 1.3×0.8x = 1.04x → 0.06x=12 → x=200.

This question belongs to: Maths Percentage

Question #2

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A man's salary was reduced by 50% and then increased by 50%. Find the net change in his salary.

A. 25% decrease

B. 15% decrease

C. 40% decrease

D. 30% decrease

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Correct Answer: Option A

Explanation:
0.5 × 1.5 = 0.75, 25% decrease.

This question belongs to: Maths Percentage

Question #3

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45% of a number is 135. The number is:

A. 300

B. 280

C. 250

D. 320

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Correct Answer: Option A

Explanation:
0.45x = 135 → x = 300.

This question belongs to: Maths Percentage

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