



 
Hi Jamie, Suppose Matt runs at m metres per second then Jill runs at m + 2 metres per second. Jill and Matt stand backtoback at the starting line, facing in opposite directions. The starting pistol goes off and they start running. The distance between them at the start is 400 metres and it is decreasing at a rate of m + m + 2 = 2m + 2 metres per second. In 40 seconds they meet. Write an equation relating these facts and solve for m. Penny  


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