Problem 1:
For how many percent (Vx) number X should be increased that derived number reduced for percent (m), again amount X?
FORMULA 1: 8
Problem 2:
Number X is increased for (V) percent. For how many percent (mx) derived number should be reduced that we get number X again?
FORMULA 2: -2750
Problem 3:
For how many percent (?x) number X should be reduced that derived number increased for percent (v) again amount X?
FORMULA 3: 104r
Problem 4:
Number X is reduced for (M) percent. For how many percent (vx) derived number should be increased that we get number X again?
Formula 4: this one was a dusie?