There are a lot of rational number between 7.7 and 7.9, but the problem asked to find only one ratio number, so I will choose one which is 7.8. 7.8 is a rational number because ration number means that it can change into a fraction or improper fraction. Now, let's change 7.8 into the fraction First of all, change this into mixed number: 7.8 =7 8/10 =7 4/5 Then, change this into improper fraction. Step 1: Numerators: 7×5+4=39 Step 2: Denominator 5, so your final answer will be 39/5. Hope it help!
