Answer :
0.4 gallons of gasoline each hour
We want to know how much gas he uses in 4.2 hours.
Multiply:
0.4 * 4.2 = 1.68
So he uses 1.68 gallons of gas in 4.2 hours.
We want to know how much gas he uses in 4.2 hours.
Multiply:
0.4 * 4.2 = 1.68
So he uses 1.68 gallons of gas in 4.2 hours.