Assuming she set up the problem vertically, she began subtracting from the left, instead if the right.
Answer:
5520 min
Step-by-step explanation:
4*115=460
460*12=5520
Answer:
180 CDs
Step-by-step explanation:
So if Sam has 84 CDs, and the ratio from Sam to Alice is 7:8, we can do 84/7=12 so each number is equal to 12. Then we add up 7 and 8 and get 15, so we do 15*12 and we get 180.
30-2q=16
-2q=16-30
-2q=-14
q=7
X=5 because 4x5=20 and 20-4=16