A box has 210 coins of denominations one-rupee and fifty paise only. The ratio of their respective values is 13:11. The number of one-rupee coin is
Choose the correct choice from the following
A) 65  B) 66  C) 77  D) 78  E) NOne
Solution: Respective ratio of the number of coins;   = 13:11*2 = 13:22   Hence, Number of 1 rupee coins;   = 13*210/(13+22)= 
<gadget id="calculator">13*210/(13+22)</gadget>
<output>78</output>
78.   Answer: Option 78
<result>D</result>
A box has 210 coins of denominations one-rupee and fifty paise only. The ratio of their respective values is 13:11. The number of one-rupee coin is