" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x = 0,3x+0,25x+9
x = 0,55x+9
x-0,55x = 9
0,45x = 9 |:0,45
x = 20 [ha]
x - (3/10x + ¼x) = 9ha
x - (30/100x + 25/100x) = 9ha
x - 55/100x = 9ha
45/100x = 9ha
x = 9ha * 100/45
x = 20ha
Odp.: Pole ma powierzchnię 20ha.
x-³/₁₀x-¼x=9
⁷/₁₀x-¼x=9
¹⁴/₂₀x-⁵/₂₀x=9
⁹/₂₀x=9 |:⁹/₂₀
x=9*²⁰/₉
x=20