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Exercițiul 12 pls! Cat mai repede, ca mâine am algebra! ​

Exercițiul 12 Pls Cat Mai Repede Ca Mâine Am Algebra class=

Răspuns :

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%