Răspuns:
Explicație pas cu pas:
2. a) 60=10x/100=x/10 ⇒x=600
b) 60=30x/100 ⇒x=600/3=200
c) 60=25x/100=x/4 ⇒x=240
d) 60=50x/100=x/2 ⇒x=120
e) 60=80x/100=8x/10 ⇒x=600/8=75
f) 60=75x/100=3x/4 ⇒x=240/3=80
g) 60=15x/100 ⇒x=60000/15=400
h) 60=36x/100 ⇒x=6000/36=1000/6=166,(6)
i) 60=110x/100 ⇒x=6000/110=54,(54)
j) 60=145x/100 ⇒x=6000/145=41,379
