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A purse holds Rs 20, Rs 10, and Rs 5 notes in the ratio 2 : 3 : 5. If the money totals Rs 760, how many notes of each denomination are there?

1. 12 of Rs 20, 18 of Rs 10, 30 of Rs 5
2. 16 of Rs 20, 24 of Rs 10, 40 of Rs 5
3. 20 of Rs 20, 30 of Rs 10, 50 of Rs 5
4. 14 of Rs 20, 21 of Rs 10, 35 of Rs 5

Correct answer: 16 of Rs 20, 24 of Rs 10, 40 of Rs 5

Solution

Let the number of notes be 2x, 3x, 5x. Total value = 40x + 30x + 25x = 95x = 760, so x = 8. The counts are 16, 24, and 40 notes respectively.

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