If $a:b=4:7$ and $b:c=14:15$, then $a:b:c$ is:

Question

If $a:b=4:7$ and $b:c=14:15$, then $a:b:c$ is:

Option A

4:7:15

Option B — Correct answer

8:14:15

Correct choice.

Option C

8:7:15

Option D

4:14:15

Explanation

Match the middle term. Multiply $4:7$ by $2$ to get $8:14$. So the combined ratio is $8:14:15$.

Chapter Mock 2: Ratio, Proportion and Partnership