how many 210 coin 250?
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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
A. 65
B. 66
C. 77
D. 78
Answer: Option D
Respective ratio of the number of coins;
= 13 : 11 × 2 = 13 : 22
Hence, Number of 1 rupee coins;
=
13 × 210
13 + 22
13×21013+22
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