Problema Solution
• Her speed was 30 miles per hour.
• Her gas mileage was 40 miles per gallon.
d. The gas tank in Adriana’s car holds 18 gallons of gas when it is full. Based on the same speed and gas mileage as in part (c), how many hours could Adriana drive using one entire tankful of gas? Show or explain how you got your answer.
Answer provided by our tutors
let
v = 30 mph the speed
d = the millage that Adriana’s car can make using one entire tankful of gas or 18 gallons
40 : 1 = d : 18
by solving we find:
d = 720 mi
click here to see the step by step solution:
t = the time of the ride using 18 gallons of gas
since speed = distance/time we have:
v = d/t
30 = 720/t
720/t = 30
by solving we find:
t = 24 hr
click here to see the step by step solution of the equation:
Adriana can ride 24 hours using one entire tankful of gas.