Answer:
There are no numbers for calculations.
Step-by-step explanation:
<h3>
Answer: 10 years old</h3>
Work Shown:
s = son's age
(father's age)/(son's age) = 9/2
45/s = 9/2
45*2 = s*9
90 = 9s
9s = 90
s = 90/9
s = 10
The son is 10 years old.
10.5 L = 10500 mL
# times = 10500/350 = 30 times
$35 per ticket
the unit rate means the cost of 1 ticket
divide $420 by 12 for unit rate
= $35 per ticket