The monthly incomes of two families A and B are shown by the following diagrams:
If the income of the family B is Rs. 12000, then the income of family A would be:
A. Rs. 15000
B. Rs. 20000
C. Rs. 25000
D. Rs. 30000
Answer: Option D
Solution(By Examveda Team)
Ratio of the monthly incomes of families A and B= Ratio of the areas of rectangles A and B
= 5 × 2 : 4 × 1
= 10 : 4
= 5 : 2
Let the monthly income of family A be Rs. x
Then,
5 : 2 :: x : 12000
⇒ 2x = 5 × 12000 = 60000
$$\eqalign{ & \Rightarrow x{\text{ = }}\frac{{60000}}{2} \cr & = 30000 \cr} $$
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
Join The Discussion