Question

A. 10% liczby y wynosi 5
b. 25% liczby z wynosi 10
c. 20% liczby t wynosi 6
Pomocyy :C

Answer 1

A.
10%y = 5
0.1y = 5  /:0.1
y = 50

B.
25%z = 10
0.25z=10   /:0.25
z = 40

C.
20%t = 6
0.2t = 6    /:0.2
t = 30

100% = 1
10% = 0.1
5% = 0.05 itd., gdyż 
1% = 1/100 = 0.01

Answer 2

A) 0,1y=5
y=50
b)0,25z=10
z=40
c)0,2t=6
t=30