John and maria are spending the afternoon hiking in the desert. they purchased six bottles of water for $9.00, two protein bars for lunch for & 5.00, and some peanuts for $3.00 as a snack. suppose they start 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?

Unit rate of money spent to hours =  $4 per hour  

Step-by-step explanation:

We have given,

Amount spent:

     on purchasing water=$9.00

     on protein bars = $5.00

     on peanuts = $3.00

So total amount spent on purchasing = $9 + $5 + $3 = $17

They start hiking at 11:30am and finish the hike at 3:45pm.

Total number of hiking hours = 4 hours and 15 minutes = 4.25 hours

We need to find rate of money spent per hours.

i.e. Unit rate of money spent =

Unit rate =

Unit rate = 4 dollar per hour or $4 per hour  

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step-by-step explanation: