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A bag contains Rs 187 in the form of rupee, 50 paise and 10 paise coins in ratio 3 : 4 : 5 respectively then the number of each coins is

Class: 9

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170

180

190

200

answer is A.

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Detailed Solution

Number of 1 rupee coin = 3x
Number of 50 paise coin = 4x
Number of 10 paise coin = 5x

6x + 4x + x = 374
11x = 374
x = 34
Number of 1 rupee coin = 3 × 34
     = 170
Number of 50 paise coin = 4 × 34
    = 136
Number of 10 paise coin = 5 × 34
    = 170

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