SOLUTION: Jodi walks to school every morning. If she walks at a speed of 50 meters per minute, she will be 4 minutes late for school. If she walks at a speed of 65 meters per minute, she wil

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Question 1180916: Jodi walks to school every morning. If she walks at a speed of 50 meters per minute, she will be 4 minutes late for school. If she walks at a speed of 65 meters per minute, she will reach her school 2 minutes before the assembly bell rings. How long does Jodi take to walk to school in order to be on time? How far is the school from her house?
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Jodi walks to school every morning. If she walks at a speed of 50 meters per minute, she will be 4 minutes late for school. If she walks at a speed of 65 meters per minute, she will reach her school 2 minutes before the assembly bell rings. How long does Jodi take to walk to school in order to be on time?
Let jodi's normal time be t minutes
with 50 m/s 4 minutes late
Distance = speed * time
50*(t+4) = D
65(t-2) =D
50t+200 = 65t -130
15t = 330
t = 24
Normal time = 22 minutes
Check
50*26 = 1300m (4 minutes late)
65*20 = 1300 m (2 minutes early)