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2 years ago

5

Josie hikes at 2 and 3/4 miles per hour. How long will it take her to hike 9 and 5/8 miles?

1 answer:

Leviafan [203]2 years ago

6 0

First, let's convert the givens to decimals to make calculations easier:
2 (3/4) = 2.75
9(5/8) = 9.625

We are given that:
Josie can hike 2.75 miles in one hour.
To know the time that Josie would take to hike 9.625 miles, we will simply do cross multiplication as follows:
2.75 miles ..........> 1 hour
9.625 miles .............> ?? hours

Time = (9.625*1) / (2.75) = 3.5 hours

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2 years ago

Sara has $50 in her wallet in $5 and $20 bills. Create a linear equation (with

77julia77 [94]

Answer:

<em>0 $20 bills and 10 $5 bills</em>

<em>1 $20 bills and 6 $5 bills</em>

<em>2 $20 bills and 2 $5 bills</em>

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Let's set:

x=number of $5 bills

y=number of $20 bills

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We would need another condition to solve for x and y, but we can determine some combinations that solve the problem.

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2 $20 bills and 2 $5 bills

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