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In a bag, there are 50 paise coins, Rs 1 coins, and Rs 2 coins. The total value of these coins is Rs 30. The number of Rs 2 coins is half the number of Rs 1 coins, which is half the number of 50 paise coins. Find thenumber of Rs1 coins |
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Answer» Let the number of 50 paise coins, Rs 1 coins, and Rs 2 coins in the bag be `f, theta, and t`, respectively. Total value (in Rs) `= (50)/(100) f + 1 theta + 2t = 30` `(f)/(2) + theta + 2t = 30` `t = (theta)/(2) and theta = (f)/(2)` `:. 2t = theta = (f)/(2)` `(1) rArr theta + theta + theta = 30` `:. 3 theta = 30 rArr theta = 10` |
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