Quick for hw lots of points asap need to finish quick

answer:

15 years

Step-by-step explanation:

Find the greatest common multiple.

The GCM is 15

Multiply 15 by 45 and add that to 1,100.

15*45=675            1,100+675=1,775

Multiply 15 by 15 and subtract that from 2,000.

15*15=225             2,000-225=1,775

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.