Answer:
Third week = 23.35 miles
Step-by-step explanation:
First week total miles = 15 miles
he would like to run 30% more miles each week than the week before
Second week = 15 miles + (30% of 15 miles)
= 15 + (30% * 15)
= 15 + (0.3 * 15)
= 15 + 4.5
= 19.5 miles
Second week = 19.5 miles
Third week = 19.5 miles + (30% of 19.5 miles)
= 19.5 + (30% * 19.5)
= 19.5 + (0.3 * 19.5)
= 19.5 + (5.85)
= 23.35 miles
Third week = 23.35 miles
