A box contain 280 coins of one rupee, 50 paise and 25 paise. The values of each kind of coin are in the ratio of 8 : 4 : 3. The number of one rupee coins will be
Ratio of number of coins = $$(8\times1):(4\times2):(3\times4)$$
= $$8:8:12=2:2:3$$
=> Number of one-rupee coin = $$\frac{2}{(2+2+3)}\times280$$
= $$2\times40=80$$
=> Ans - (D)
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