1.

1). 92). 63). 124). 3

Answer»

Let the number of COINS be 3x, 2x, 3x respectively

Then total amount will be given by

3x × 1 + 2x × 0.5 + 3x × 0.1 = 12.9

⇒ 3x + x + 0.3x = 12.9

⇒ 4.3x = 12.9

⇒ x = 3

Number of 50 paise coins = 2x = 2 × 3 = 6



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