Question

Va rog frumos...Dau coroana

Answer 1

a) 10/100 * x = 28
  x / 10 = 28
  x= 280
b) 25/100*y=17
 y/4=17
y=68
c)40/100*z=26
 2/5*z=26
z= 5*26/2= 65
d)80/100*p=45
4/5*p=45
p=45*5/4=56.25
e) 60/100*t=12
3/5*t=12
t=5*12/3= 20

14.p%din120=36 , =>120p/100=36
⇒p=36*100:120
p = 30% . 

1000p/100=50 => p=5000:1000=> p = 5% . 

400p/100=20 => p =2000:400 => p = 50% . 

500p/100 = 50 => p=5000:500 => p = 5% . 

45p/100=9 => p = 900:45 => p = 20% 

240p/100=12 => p = 1200:240 => p = 5% .