How many kilometers does a car cover in 6 hours and 15 minutes if its speed is 68 kilometers per hour?
15 minutes is a quarter of an hour (0.25 hours), so 6 hours and 15 minutes is the same as 6.25 hours.
To find the distance driven, multiply the time by the speed: per hour.
To multiply a whole number and a decimal, first ignore the decimal point and multiply.
To place the decimal point, count the number of decimal places in the decimal factor. There are 2 decimal places in the decimal factor, so place the decimal point in the product 2 places from the right: 425.00. So the car covers .