3 years ago

Two trains leave the same station at the same time

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

7 0

Answer:

<h2>D. 5 hours</h2>

Step-by-step explanation:

rt=d

rt+rt=900

80t+100t=900

180t=900

18t=90

2t=10

t=5

5 hours

80*5+100*5=900

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