Problema Solution
A group of students left school to go camping. They walked at a speed of 80 m/min. A student who was late for 7 minutes decided to catch up with the others. He rode his bicycle and cycled at a speed of 150 m/min. How long did he take to catch up with his classmates?
Answer provided by our tutors
let x = the minutes it took him to catch up with his classmates
since speed = distance/time follows distance = speed*time
80(x + 7) = 150x
by solving we find
x = 8 minutes
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it took him 8 minutes to catch up with his classmates.