A sum of money at simple interest amounts to Rs. 920 in 3 years and to Rs. 1040 in 5 years. Find the principal. MCQ with Answer and Explanation

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A sum of money at simple interest amounts to Rs. 920 in 3 years and to Rs. 1040 in 5 years. Find the principal.

A. Rs. 700

B. Rs. 740

C. Rs. 760

D. Rs. 720

Answer: Option B

Solution (By JKSSB Mock Tests)

SI for 2 years = 1040-920 = 120, SI per year = 60. For 3 years, SI = 180, principal = 920-180 = 740.

This question belongs to: Maths Percentage

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Question #1

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A student scored 300 marks out of a total of 400. What is their percentage?

A. 70%

B. 60%

C. 80%

D. 75%

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Correct Answer: Option D

Explanation:
Percentage = (300 / 400) * 100% = 75%.

This question belongs to: Maths Percentage

Question #2

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80% passed English, 70% Maths, 60% both. % failed both:

A. 10%

B. 5%

C. 20%

D. 15%

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Correct Answer: Option A

Explanation:
Pass at least one = 80+70-60=90%, fail both = 10%.

This question belongs to: Maths Percentage

Question #3

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A number is increased by 20% and then decreased by 20%. The resulting number is 20 less than the original. Find the original number.

A. 500

B. 400

C. 550

D. 450

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Correct Answer: Option A

Explanation:
1.2×0.8=0.96, 0.96x = x - 20 → 0.04x=20 → x=500.

This question belongs to: Maths Percentage

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