" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x + 20%x = 120%x - pewna liczba zwiększona o 20%
70%*120%x = 42
0,84x = 42
x = 50
Odp. To 50
x - 100%
70x = 42 × 100
70x = 4200 / ÷ 70
x = 60
60 - 120%
x - 100%
120x = 60 ×100
120x = 6000 / ÷ 120
x = 50
Tą liczbą jest 50