Maria and Nadia drive from Philadelphia to Toronto to visit their friend. They take two days for the trip, stopping along the way for sightseeing. To conserve on gas mileage, they drive at a constant speed for the entire trip.
Which of the following equations, where x represents hours and y miles, represent a speed that is greater than Maria and Nadia's speed?

Day 1: 4 hours 240 miles
Day 2: 5 hours 300 miles

Choose the answers that apply:
a) y=60x
b) y=65x
c) y=70x
d) y=80x

the answer is B- y=65x          C- y=70x                  D-y=80x

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.