Answer:
After 15.38 seconds the boys are walking together
Step-by-step explanation:
∵ Jordan speed = 3 m/s
∵ Justin speed = 3.5 m/s
∵ The difference between their homes and the school is 100 m
∴ D(Justin) - D(Jordan) = 100
∵ Distance = speed × time
∵ They started on the same time (t)
∴ 3.5t - 3t = 100
∴ 6.5t = 100
∴ t = 100/6.5 = 15.3846 seconds
∴ After 15.38 seconds the boys are walking together
