The numbers x, y, z are proportional to 2, 3, 5. The sum of x, y, z is 100. If y = px - 10, then p is equal to.
A. $$\frac{3}{2}$$
B. 2
C. $$\frac{5}{2}$$
D. 3
Answer: Option B
Solution(By Examveda Team)
$$\eqalign{ & \to x:y:z = 2:3:5 \cr & \therefore x = \left( {100 \times \frac{2}{{10}}} \right) = 20 \cr & y = \left( {100 \times \frac{3}{{10}}} \right) = 30 \cr & y = px - 10 \cr & \Rightarrow 30 = 20p - 10 \cr & \Rightarrow 20p = 40 \cr & \Rightarrow p = 2 \cr} $$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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