There are three numbers. If the ratio of the first to the second number is 2 : 7 and that of the second to the third number is 5 : 8, then the ratio of the first to the third number is:
Answer & explanation
Correct answer: option 2
Here,
A : B : C
2 : 7
: 5 : 8
10 : 35 : 56
⇒ A : C = 10 : 56 = 5 : 28.