Answer:
9:50
Step-by-step explanation:
To get the ratio, we can just simplify a fraction down to 1.
Since there's 18 dimes, and 100 coins in total, we'll start with the fraction
18/100
Put 18/100 in simplest form
9/50
Then Turn the fraction into a ratio
9/50 -> 9:50
For every 9 dimes there's 50 coins.
I hope this helped.
(Simplified to 1, is 1/5.56 or 1:5.56)