Candice spent 3 ⅘ hours, and Shane spend 2 ⅒ hours at track practice over the weekend. How many more hours did Candice spend than Shane at track practice?

Answer 1

3 4/5 = 3.8

2 1/10 = 2.1

3.8 - 2.1 = 1.7 hours more = 1 7/10 hours more

or

3 4/5 - 2 1/10 = 19/5 - 21/10 = 38/10 -21/10 = (38-21)/10 = 17/10 = 1 7/10 or 1.7 hours more