A box contains 280 coins of one rupee, 50 paise and 25 paise. The value of each kind of the coins are in the ratio of 8 : 4 : 3. Then the number of 50 paise coins is
A. 70
B. 60
C. 80
D. 90
Answer: Option C
Solution(By Examveda Team)
\[\begin{array}{*{20}{c}} {}&{{\text{Rs}}{\text{. 1}}}&:&{50\,{\text{Paise}}}&:&{25{\text{ Paise}}} \\ {{\text{Value of coins}}}&{8x}&:&{4x}&:&{3x} \\ {{\text{Number of coins}}}&{8x \times 1}&:&{4x \times 2}&:&{3x \times 4} \\ {}&{8x}&:&{8x}&:&{12x} \end{array}\]∴ Total coins ⇒ 8x + 8x + 12x = 28x
28x = 280 (Given)
x = \[\frac{{280}}{{28}}\] = 10
∴ Number of 50 paise coins are = 8x = 8 × 10 = 80
Related Questions on Ratio
If a : b : c = 3 : 4 : 7, then the ratio (a + b + c) : c is equal to
A. 2 : 1
B. 14 : 3
C. 7 : 2
D. 1 : 2
If $$\frac{2}{3}$$ of A=75% of B = 0.6 of C, then A : B : C is
A. 2 : 3 : 3
B. 3 : 4 : 5
C. 4 : 5 : 6
D. 9 : 8 : 10
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