The ratio of north american butterflies to south american butterflies at a butterfly park is 5: 3.the ratio of south american butterflies to european butterflies is 3: 2. there are 30 north american butterflies at the butterfly park.
a. how many south american butterflies are there?
b. how many euro pean butterflies are there?
p. s. i think 18 south and 12 european not sure though

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.