Find the factors and get the ones common to both of them
45=3 times 3 times 5
81=3 times 3 times 3 times 3
so the factors common to both are 3 times 3 which is 9
Answer:
$46
Step-by-step explanation:
Your charge for parking on Friday is for 3 hours, so $6.
For Saturday, Sunday, Monday, and Tuesday, you are charged the daily maximum, so 4×$10 = $40.
Your total charge may be $46.