Exercițiul 12 pls! Cat mai repede, ca mâine am algebra!
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Răspuns:
x/100×200=60
2x=60
x=30%
b) x/100×50=400
50x/100=400
x/2=400
x=800%.
c) x/100×1000=80
1000x/100=80
10x=80
x=8%
d) x/100×24=6
24x/100=6
6x/25=6
6x=150
x=150÷6=25%
e) x/100×25=7
25x/100=7
x/4=7
x=4×7=28%
f) x/100×45=12
45x/100=12
9x/20=12
9x=240
x=240÷9=26,67%