Question

Tevin leaves school to walk home. His friend, Karen, notices 0.2 hours later that Tevin forgot his phone at the school. So Karen rides her bike to catch up to Tevin and give him the phone. If Tevin walks at 2 mph and Karen rides her bike at 8.2 mph, find how long (in hours) she will have to ride her bike until she catches up to him.

Answer 1

Explanation:

equation is:

8.2x=0.2x+0.4

if x is time

8.2x-0.2x=0.4

8x=0.4

x=0.05 hours from when Karen starts and 0.45 hours fromt the time tevin started.