Question

Miranda’s car travel 40 miles on 1 3/8 gallons of gas. Miranda wants to travel 80 miles. How many gallons of gas will her car use?

Answer 1

Answer:

13/4 gallons will take her to travel 80 miles

Step-by-step explanation:

                40miles ---------------- 13/8 gallons

first will need to get how many gallons will it take to travel 1 mile?

               40miles ---------------- 13/8 gallons

                1 miles ----------------  ? (x)

by cross multiplication =  40 * (x) = 1 * 13/8

                                         40x = 13/8

therefore    $\frac{40x}{40}$ = $\frac{13}{8}$ /40

                   $\frac{40x}{40}$ =  $\frac{13}{8}$ * $\frac{1}{40}$

              x = 13/320

therefore,   1 miles ----------------  13/320

                  80 miles ---------------- ? (x)

by also cross multiplying,  80 * 13/320 = 1 * (x)

                                 therefore, x = 13/4 gallons