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11. Sandra Wallace walks at 5 miles per hour; Michael Sanders walks at 3 miles per hour. IfMichael starts to walk in a certain direction 2 hours before Sandra, how far behind Sandrawill he be when Sandra has walked 20 miles?Answer

Respuesta :

Given:

Sandra Wallace walks at 5 miles per hour

Michael Sanders walks at 3 miles per hour

when Sandra has walked 20 miles

So, the number of hours = 20/5 = 4 hours

Michael starts to walk in a certain direction 2 hours before Sandra

So, the number of waking hours of Michael = 4 + 2 = 6 hours

So, the number of miles that Michael walked = 6 * 3 = 18 miles

So, the difference between them = 20 - 18 = 2 miles

So, the answer will be

Michael will be 2 miles behind Sandra

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