Question

Aflati scrierea p% pentru:
7/25,5/4,9/10,21/50,4/20,3/5.

Answer 1

p|100=7|25⇒25p=700⇒p=700|25=⇒p=28
p|100=5|4⇒4p=500⇒p=500|4⇒p=125
p|100=9|10⇒10p=900⇒p=900|10⇒p=90
p|100=21|50⇒50p=2100⇒p=2100|50⇒p=42
p|100=4|20⇒20p=400⇒p=400|20⇒p=20
p|100=3|5⇒5p=300⇒p=300|5⇒p=60
succes!

Answer 2

P/100=7/25
25P=700
P=700:25=28

P/100=5/4
4P=500
P=500:4=125

P/100=9/10
10P=900
P=900:10=90

P/100=21/50
50P=2100
P=2100:50=42

P/100=4/20
20P=400
P=400:20=20

P/100=3/5
5P=300
P=300:5=60