Answer:
13 minutes
Step-by-step explanation:
∵ Joe runs 8 miles in the time = 1 hour or 60 minutes
∴ Joe runs 1 mile in the time = [tex]\frac{60}{8}[/tex] minutes
∴ Joe runs 13 miles in the time = [tex]\frac{60\times 13}{8}[/tex] minutes
= 97.5 minutes
∵ Marjorie runs 8 miles in the time = 52 minutes
∴ Marjorie runs 1 miles in the time = [tex]\frac{52}{8}[/tex]
∴ Marjorie runs 8 miles in the time = [tex]\frac{52\times 13}{8}[/tex]
= 84.5 minutes
Therefore, times taken less by Marjorie to complete the marathon = 97.5 - 84.5 = 13 minutes.
