If A : B = 3 : 2, B : C = 7 : 5 and C : D = 10 : 3, then what is A : D equal to?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 7 : 1.
Given that
If A : B = 3 : 2, B : C = 7 : 5 and C : D = 10 : 3,
A/B = 3/2
B/C = 7/5
C/D = 10/3
Calculation
A/B × B/C × C/D = 3/2 × 7/5 × 10/3
A/D = 7/1
Hence, the required ratio is 7 : 1