SOLVING WORD PROBLEM: John called a plumber to fix a leak in his bathroom . The plumber charged $30 to come to the house and $25 per hour while fixing the sink. If the final bill was $105, how many hours was the plumber at John's house?

Step-by-step explanation:

30 + 25h = 105

25h = 75

h = 75/25 = 3

The plumber worked 3 hours.

3 hours

Step-by-step explanation:

$25 per hour × =$105 or

add $25 until you get to $105

eve and marks ratios are equivalent

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.