Answer: he saves $432 with his new car in a year.
Step-by-step explanation:
His new car use 1 gallon of gas for every 25 miles he drives. Since Mr.Nelson drives about 1200 miles per month, the number of gallons of gas that he would use with his new car is
1200/25 = 48 gallons of gas
His old car used 1 gallon of gas for every 20 miles he drove. This means that the number of gallons of gas that he would use with his old car is
1200/20 = 60 gallons of gas
The number of gallons of gas that he will save in a month is
60 - 48 = 12 gallons.
If a gallon costs $3, the cost of 12 gallons would be 3 × 12 = $36 per month. Therefore, the amount of money will he save in 1 year with the new car is
36 × 12 = $432
