Answer:
n=72x9
Step-by-step explanation:
Because Marley is 9x as much, so that's 72x9.
Take the minise out the ecation so we can
Answer:

Step-by-step explanation:
You can plot the graph on online graphing calculator to check.
Brainliest please~
We have a proportion: 60/?= 20/100
Cross multiply:
20*?= 60*100
⇒ ?= 60*100/20= 300
60 minutes is 20% of 300 minutes~