Wanda started walking along a path 2 minutes (120 seconds) before Dave. Wanda walked at a constant rate of 5 feet per second. Dave walked along the same path at a constant rate of 10 feet per second. Graph the system of linear equations. If they continue walking at these rates, when will Dave catch up to Wanda?

Question

Mathematics

Sharp

7 July, 09:10

Wanda started walking along a path 2 minutes (120 seconds) before Dave. Wanda walked at a constant rate of 5 feet per second. Dave walked along the same path at a constant rate of 10 feet per second. Graph the system of linear equations. If they continue walking at these rates, when will Dave catch up to Wanda?

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Erik Flowers · Answer 1

The solution for the problem:

let x be the travel time of Dave

x + 120 be the travel time of Wanda

using the distance formula which is: speed * travel time = distance (which will be the same for both Wanda and Dave)

10x = 5 (x+120)

10x = 5x + 600

5x = 600x = 120

Dave will catch up after 120 seconds.