This means that Riko starts her bike ride after Yuto has already gone 5.25 miles, and even with her faster speed, there will be a limited time (up to 52.5 minutes) when she cannot catch up to him, and we can't have negative time (like -1 minute) because that doesn't make sense in real life.
Yuto and Riko went for a bike ride on the same path.
When Riko left their house, Yuto was 5.25 miles along
the path. If Yuto's average speed was 0.25 miles per
minute and Riko's average speed was 0.35 miles per
minute, then Riko will be behind Yuto when 0 s t < 52.5,
where t is time in minutes. Explain what this solution
means and why t cannot be less than zero. One sentence for a 9th grader
1 answer
1 answer