Answer:
150
Step-by-step explanation:
First we have to find the unit rate. So we divide 90 by 6 and we get 15. So the server would see 15 customers in one hour. Now we multiply 15 by 10 and get 150.
If we want to check our answer we can multiply 6 by 15 and we get 90. So now we can conclude that both are true.
Hope I helped!!
