[Question]: Jade and Krista went on a road trip for 3 days. On each day Jade had to drive 8 hours and Krista had to drive 6 hours to arrive at the destination. How many hours did they drive altogether?
[Answer]: Jade drives for a total of 3 days x 8 hours / day = 24 hours. Krista drives for a total of 3 days x 6 hours / day = 18 hours. Together they drive 24 hours + 18 hours = 42 hours.
So the answer is 42.

[Question]: An air conditioner running for eight hours would consume 7.2 kilowatts. How many kilowatts would the air conditioner consume if it was used for 6 hours a day for 5 days?
[Answer]: The air conditioner consumes 7.2 / 8 = 0.9 kilowatt per hour. So, in 6 hours, it will consume 0.9 kilowatts per hour * 6 hours = 5.4 kilowatts. In 5 days, its total consumption is 5.4 kilowatts * 5 = 27 kilowatts.
So the answer is 27.

[Question]: On a weekend road trip, the Jensen family drove 210 miles on highways, where their car gets 35 miles for each gallon of gas and 54 miles on city streets where their car gets 18 miles for each gallon. How many gallons of gas did they use?
[Answer]:
On highways, the Jensen family used 210 miles / 35 miles / gallon = 6 gallons of gas. On city streets, the Jensen family used 54 miles / 18 miles / gallon = 3 gallons of gas. Total, the Jensen family used 6 gallons + 3 gallons = 9 gallons of gas.
So the answer is 9.