24x13=312
There are a total of 312 total ice cream cartons.
All you have to do is the amount she bought divided by 0.05 and then add the answer you get to the amount she bought each time
X would equal 9. Subtract 18 from both sides then divide by two to get 9 as X
I get:
24 = 3x-12
add 12 to both sides
36 = 3x
divide each side by 3 and you will get 12
