A sum of money at simple interest amounts to Rs. 850 in 3 years and to Rs. 925 in 4 years. Find the principal. MCQ with Answer and Explanation

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A sum of money at simple interest amounts to Rs. 850 in 3 years and to Rs. 925 in 4 years. Find the principal.

A. Rs. 675

B. Rs. 600

C. Rs. 625

D. Rs. 650

Answer: Option C

Solution (By JKSSB Mock Tests)

SI for 1 year = 925-850 = 75. For 3 years SI = 225, principal = 850-225=625.

This question belongs to: Maths Percentage

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In an election, 20% of the votes were declared invalid. The winner got 70% of the valid votes and won by 1600 votes. Find the total number of votes polled.

A. 6000

B. 8000

C. 5000

D. 4000

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Correct Answer: Option C

Explanation:
Winner got 70%, Loser 30% of valid votes. Difference = 40% of valid votes = 1600. Valid votes = 4000. Valid votes = 80% of total. Total = 4000 / 0.8 = 5000.

This question belongs to: Maths Percentage