Asked by JD Smith
Ports A and B are 400 miles apart. One boat starts from port A for port B at 6:05 and travels with a constant speed of 12 mph. If it leaves port A at 8:20, what speed musta a second boat have to arrive at port B at the same time? Explain your reasoning.
Answers
Answered by
bobpursley
The first boat takes 400/12 hrs, or 33 1/3 hrs.
the second boat has to get there in 33 1/3 - 2 1/4 hrs.
speed second boat: 400/time above.
the second boat has to get there in 33 1/3 - 2 1/4 hrs.
speed second boat: 400/time above.
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