Sold watch at 5% loss. If sold for Rs. 27 more, gain 7%. Cost price: MCQ with Answer and Explanation

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Sold watch at 5% loss. If sold for Rs. 27 more, gain 7%. Cost price:

A. 200

B. 240

C. 225

D. 210

Answer: Option C

Solution (By JKSSB Mock Tests)

CP=x, SP=0.95x. 0.95x+27=1.07x → 0.12x=27 → x=225.

This question belongs to: Maths Percentage

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Question #1

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In an election, 20% voters did not vote. Winner got 48% of total votes and won by 2400 votes. Total voters:

A. 18000

B. 15000

C. 12500

D. 10000

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Correct Answer: Option B

Explanation:
Votes cast = 80%. Winner got 48% of total, loser got 80% - 48% = 32% of total. Margin = 48% - 32% = 16% of total = 2400 → total = 2400/0.16 = 15000.

This question belongs to: Maths Percentage

Question #2

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In an examination, 60% of students passed in Mathematics, 70% passed in Science, and 20% failed in both. What percentage passed in both subjects?

A. 50%

B. 70%

C. 40%

D. 60%

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Correct Answer: Option A

Explanation:
Passed in at least one subject = 100% - 20% = 80%. n(M U S) = n(M) + n(S) - n(M ∩ S). 80 = 60 + 70 - n(M ∩ S). n(M ∩ S) = 130 - 80 = 50%.

This question belongs to: Maths Percentage