Roger had 20 minutes to do a three-problem quiz. He spent 11 and 3/4 minutes on question A and 6 1/2 minutes on question B. How much time did he have left for question C? )
Solve on paper to find the answer as a fraction.

$18 was the price of the t-shirt

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

but which class are u may know that first

where's the diagram?

step-by-step explanation: