Answer:15
Step-by-step explanation:he has 3 packs of model cars. 15 is in each pack if he gave away four he would have 11 left.
The answer is sampling convenience. I am super sure.
First you cross multiply.
2*(b-4)=6b
Then distribute the 2.
2b-8=6b
Minus 2b from each side.
-8=4b
Divide each side by 4.
-2=b
So -2 is your answer.
Eight goes into eight , eight times. 8 times 8= 64