Asked by ellie
Zach goes for his morning 2 km jog around the neighborhood. Zach runs part of the way at a speed of 10 km/h and jogs the rest at a speed of 7 km/h. If it took him 15 minutes (0.25 h), how far did he run and how far did he jog?
Can someone please help me. Thank you so much!
Can someone please help me. Thank you so much!
Answers
Answered by
oobleck
since time = distance/speed,
if he ran for x km, then
x/10 + (2-x)/7 = 1/4
if he ran for x km, then
x/10 + (2-x)/7 = 1/4
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