Wells college in aurora, new york was previously an all-girls college. in 2005, the college began to allow boys to enroll. by 2012, the ratio to girls was 3 to 7. if there were 300 more girls than boys in 2012, how many boys were enrolled that year?

225

Step-by-step explanation:

Let G and B be the number of girls and boys in 2012.

The ratio boys to girls was 3 to 7.

This means

B/G = 3/7

There were 300 more girls than boys in 2012.

This means

G = B+300

Replace in the first equation and solve for B

B/(B+300) = 3/7 ===> 7B = 3(B+300) ===> 7B = 3B + 900 ===>

===> 7B-3B = 900 ===> 4B = 900 ===> B=900/4 ===> B=225

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.