Marisol and Mimi walked the same distance from their school to a shopping mall. Marisol walked 2 miles per hour, while Mimi left 1 hour later and walked 3 miles per hour. If they reached the mall at the same time, how far from the mall is their school?

Question

2526 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-06-23T23:12:30

#6# miles.

# d = t xx 2 mph#

# d = (t -1) xx 3 mph #

The distance to the mall is the same so the two times can be set equal to each other.

# t xx 2mph = t-1 xx 3 mph#

# 2t = 3t - 3 #

Subtract 2t and add 3 to both sides of the equation

# 2t- 2t +3 = 3t -2t - 3 + 3# This gives:

# 3 = t #

the time equals three hours.

# d = 3 h xx 2mph #

# d = 6 # miles.