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neonofarm [45]
3 years ago
5

Monica is 400 miles away from home while her sister,Mary is 300 miles away.Say monica travels at a speed of 50 miles per hour an

d Mary travels back at a speed of 40 miles per hour.Solve the system of equation and graph it. When are the two sisters the same distance frome home
Mathematics
2 answers:
saveliy_v [14]3 years ago
7 0
400,300
350,260
300,220
250,180
200,140
150,80
100,40
50,0
0,0

9 hrs?
abruzzese [7]3 years ago
3 0

Answer:

7.75 hours

Step-by-step explanation:

Distance = Rate times Time

Monica 400=50xT

Mary 300=40xT

Monica 400/50=T, so T=8 hours.  This is how long it takes her to get home.

Mary 300/40=T, so T=7.5 hours.  This is how long it takes her to get home.

The difference in time between 7.5 and 8 hours is 7.75 hours.  This is the time they will be an equal distance from home.

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