Answered

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A cargo plane flew from the US across the Atlantic at 280 mph, and flew back to the US at 300
mph. Given that the first trip took two hours longer, how long was the return trip?

Sagot :

Irspowidn

Answer:

Step-by-step explanation:

300t=280(t+2)

300t=280t+560

20t=560

t=28

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