Answer: 3:1
Explanation: In a question like this, they are simply asking you to simply the ratio or break it down. To do this you are going to find the highest number that can go into both numbers without leaving a remainder. In simpler terms, find the HCF (highest common factor).
- 5 is the highest number that can go into both 5 and 15 without leaving a remainder, making it the highest common factor (HCF).
- 5 into 5 is 1. 5 into 15 is 3 therefore the simpler ratio is 3:1