Answer:
49/101 minutes
Explanation:
Your first part is correct the estimate will be 30 minutes because 5 miles divided by 10 miles per hour = 1/2 hours which is 30 minutes.
To solve the second part you need to use the numbers given first so 4 9/10 divided by 10 1/10. I find it easier to do improper fractions in this type of problem so I will do 49/10 divided by 101/10. Now you have to divide. The steps for dividing fractions are
1)Keep the First Fraction the Same.
2)Flip the second fraction over
3)Change the sign to multiplication
After the steps you will get 49/10*10/101
The denominator of the first fraction and the numerator of the second share a factor so you can cross them out. The factor they share is 10 and both numbers are ten so you can cross them out to one. Now you have 49/1*1/101
Since 49 and 101 don't share any factors you can now multiply. You get 49/101.