Rate of speed and distance

Question

Christoper is at a friends house 4 miles away from his home. At 5:00 p.m. he begins riding home on his bike at a rate of 0.3 miles per minute.At the same time, his mom decides to go pick him up. She leaves their home in the car traveling at 0.5 miles per minute. Let m

represent the number of minutes both have been on the road. How long will it take for Christopher and his mom to cross paths?

Answer 1

distance Chris travels = .3m

distance mom travels = .5m

distance traveled by both together is .3m + .5m = 4

.8m = 4

You should be able to get the answer now.