Question

Ruby frosted 8 cookies in 20 minutes. At this rate how many cookies could she frost in 2 hours?

Answer 1

Step-by-step explanation:

Just divide 2 hours by 20 min and then multiply answer by 8

This is called cross multiplication

8 cookies x cookies

--------------- = ----------------

20 minutes 2 hours/120mins

Answer 2

Step-by-step explanation:

she frosted 8 cookies in 20 min

for 2 hours = 2×60=120min.

so 120/20=6[divide the time ]

so for 20 min 8 cookies. there are 6 parts of 20 min .

so 8×6=48

therefore she can frost 48 cookies in 2 hours