Answer:
should be 112 :)
Explanation:
84 = 75%
so 25% = 84÷3=28
28=25%
25% + 75% = 100% (the whole)
so 28+84=112.
You can use the inverse to work this out also :)
If 112 = 100%
56=50%
28=25%
Add the 50% to the 25% to get the 75%, which gives us 84 :)