Answer:
it is 3
Step-by-step explanation:
you take the cost of the canvas( 6.45) away from the total amount(24.45).
the answer is 18( the total of the 6 tubes)
now to find the cost of one tube you divide the total cost of the tubes(18) by the amount of tubes(6)
you wpuld get 3 the cost of one tube of paint