Răspunsuri

2014-03-16T15:41:36+02:00
P% 240 = 60 
p supra 100 ori 240 =60
p supra 10 ori 24 = 60
p ori 12 supra 5 = 60 
p ori 12 = 300
p = 25 %

3 supra 10 ori x = 531
3ori x supra 10 = 531
3 ori x = 5310
x = 1770 . Gata
mersii mult.
2014-03-16T15:44:32+02:00
1. (p/100)*b=a
a=60
b=240
(p/100)*240=60
24p/10=60⇒24p=600⇒p=25%
2. (30/100)*x=531
3x/10=531
3x=5310⇒x=5310/3=1770
2 3 2