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Solve by making a proportion.
a) My car uses 15 gallons of gas to make 200 miles. How many gallons will it use for 320 miles?
b) If seven movie tickets cost $57.40, how much would 5 tickets cost?
c) If I paid $9.00 for 4 lbs of candies, how much candies can I buy for $12.00?
d) A teacher grades 27 students' essays in 3 hours. How many essays can she grade in 8 hours if she spends the same amount of time grading each essay?
Plz help and only give the answer! will mark brainliest! TY if u answer

Respuesta :

A)The gallons of gas needed to make 320 miles = 24 gallons of gas

Explanation

Step 1: To find the gallons of gas needed to make 1mile

The car uses 15 gallons of gas to make 200 miles.

from this we get,

gallons of gas needed to make 1mile = 15/200 =3/40

Step 2: To find the gallons of gas needed to make 320 miles

Therefore, the gallons of gas needed to make 320 miles = 320 x(3/40) = 24 gallons of gas

StarsApply

Answer: b= 41$

c= 5.333 lb

Step-by-step explanation:

b explanation. $57.40/7=$8.20*5=$41

c explanation.   4 pounds         x pounds

                          ----------- = -------------

                       9 dollars         12 dollars  

Set up a proportion, then cross multiply.

9x = 4(12)

  9x = 48

    x = 48/9

    x = 5.3333 lbs

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