Two kids at a summer camp, Liam and Ivan, are competing in a potato sack race. Liam is younger, so he is given a head start of 12 meters. When the race starts, Liam hops at a rate of 1 meter per second, and Ivan hops 4 meters per second. Eventually, Ivan will overtake Liam. How far will Ivan have to hop? How long will that take?

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.

what chart am i supposed to follow?

the answer would be c