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John and Maria are spending the afternoon hiking in the desert. They purchased 6 bottles of water for $9.00, two protein bars for $5.00, and some peanuts for $3.00 as a snack. Suppose they star hiking at 11.30 A.M. and finish the hike at 3.45 P.M. What is the unit rate of money spent to hours hiked? Show your work.

Sagot :

Answer:

They spent $4 per hour hiked.

Step-by-step explanation:

They spent

  • $9.00 in water.
  • $5.00 in protein bars.
  • $3.00 in peanuts.

Total cost $17.

Now, if the hiked from 11.30 AM to 3.45 PM, then they hike for 4 hours and 15 minutes. However, we need to transform those minutes into hours before we find the rate

[tex]15min\frac{1hr}{60min}=\frac{1}{4}hr=0.25hr[/tex]

So, they hiked for 4.25 hours.

Then, to find the unit rate of money spent per hour hiked, we just need to divide $17 by 4.25 hr.

[tex]\frac{\$17}{4.25hr}=4\frac{\$}{hr}[/tex]

Therefore, they spent $4 per hour hiked.

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