The car travelled a distance of 36.15 miles in 1 hour. The car travelled a distance of 12.05 miles in 1 gallon of gas.
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
It is given that a car traveled at a constant speed for 4 hours and covered 144.6 miles and also it used 12 gallons of gas to travel this distance.
It took 4 hours to travel a distance of 144.6 miles.
For 1 hour at constant speed, the car will travel 144.6/4 miles .
∴ For 1 hour at constant speed the car travels 36.15 miles.
For 12 gallons of gas, the car travels 144.6 miles.
For 1 gallon of gas, the car travels 144.6/12 = 12.05 miles
∴ For 1 gallon of gas, the car travels 12.05 miles.
Thus the car travelled a distance of 36.15 miles in 1 hour. The car travelled a distance of 12.05 miles in 1 gallon of gas.
To learn more about Unitary method, refer -
#SPJ2
Answer:
There were 7 girls in Mr. Brown's class to begin with.
i really hope this helps/brainliest is always appreciated