Sum of two numbers is thrice their difference. Their ratio is :
A. 1 : 2
B. 2 : 1
C. 3 : 1
D. 1 : 3
Answer: Option B
Solution(By Examveda Team)
Let the numbers = a, bAccording to the question,
a + b = 3 (a - b)
$$\frac{a + b}{a - b}$$ = $$\frac{3}{1}$$
By componendo and dividendo
$$\frac{2a}{2b}$$ = $$\frac{4}{2}$$
$$\frac{a}{b}$$ = $$\frac{2}{1}$$
a : b = 2 : 1
Related Questions on Number System
Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
A. 12, 24, 36
B. 11, 22, 33
C. 12, 24, 32
D. 5, 10, 15
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