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At 2:30 p.m., Cayson leaves his house and drives north to the stadium. He arrives at
5:00 p.m. Also leaving at 2:30 p.m., his brother Riley leaves his house and drives south
to a lake. He arrives at 5:30 p.m. The driving distance from the stadium to the lake is 385
mi. Cayson and Riley drove at the same speed.
What was their speed?

Respuesta :

frika

It takes Cayson 2.5 hours to get from house to the stadium and it takes Riley 3 hours to get from house to the lake. In total they spent 5.5 hours to overcome the distance 385 mi.

Use formula:

[tex]D=rt,[/tex] where D is distance, r - speed and t - time.

Thus,

[tex]385=r\cdot 5.5,\\ \\r=70[/tex] mi/h.

Answer: 70 mi/h.

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