Ruby was doing a growth experiment for school and found that her hair was growing at a rate of 3/20 centimeters per week. How many centimeters will her hair grow in 1/3 of a week?
9/60
20/9
9/20
1/20

Question

Ruby was doing a growth experiment for school and found that her hair was growing at a rate of 3/20 centimeters per week. How many centimeters will her hair grow in 1/3 of a week?
9/60
20/9
9/20
1/20

anonymous · Answer

ok first we have to sort out what is wat

the rate = 3/20

the time is = 1/3

so in order to get the total length, we just multiply how fast her hair grows/per week, by the number of weeks:

3/20 cm per week x 1/3 week = 3/60 cm = 1/20 cm