A bag contains 216 in the form of one-rupee, 50-paise and 25-paise coins in the ratio of 2:3:4. Find the number of 50-paise coins.
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Solution
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Let number of 1rupee coin be2x
Let number of 50 paise coin be3x
Let number of 25 paise coin be 4x
Totalpaise=21600paise
2x×100+3x×50+4x×25=21600
200x+150x+100x=21600
450x=21600
x=48
∴ number of 50 paise coin =3×48=144
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