SOLUTION: Monica left Montreal driving at 30 km/h. Wendy left 2 h later and traveled the same road at 40 km/h. At what distance from Montreal will Wendy overtake Monica?
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Question 1149559: Monica left Montreal driving at 30 km/h. Wendy left 2 h later and traveled the same road at 40 km/h. At what distance from Montreal will Wendy overtake Monica?
use linear systems (substitution, elimination) Found 2 solutions by MathLover1, greenestamps:Answer by MathLover1(20850) (Show Source):
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let distance be
Monica’s speed is
Wendy’s speed is
Monica’s time
Wendy’s time
Time difference between Monica and Wendy meeting is hrs, so
............eq.1
and, since => , then
...plug in given speed
.........eq.2 ...substitute in eq.1
