A box contains 420 coins of 1 rupee, 50 paise and 20 paise coins. The ratio of their values is 13 : 11 : 7. The number of 50 paise coins is = ?
A. 42
B. 78
C. 66
D. 132
Answer: Option D
Solution (By Examveda Team)
| Rs. 1 | : | 50 P | : | 20 P | |
| Values | 13x | : | 11x | : | 7x |
| Number of coins | 13x×1 | : | 11x×2 | : | 7x×5 |
| 13x | : | 22x | : | 35x |
⇒ 13x + 22x + 35x = 420
⇒ 70x = 420
⇒ x = 6
∴ Numbers of 50 paise coins are
= 22x = 22 × 6 = 132
This Question Belongs to Arithmetic Ability >> Ratio
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