Question

Oblicz. a). 2 1/3 : 2/5 = 7/3:2/5 = b). 4 2/5 : 11/20 = c).1 1/4: 2 1/2= d).2 2/9: 3 1/6 =

Answer 1

a) 2 1/3:2/5=7/3:2/5=7/3 razy 5/2=35/6=5 i 5/6

b)4 2/5:11/20=22/5 razy 20/11=100/11=8

c) 1 1/4:2 1/2=5/4 razy 2/5=2/4=1/2

d) 2 2/9 : 3 1/6=20/9:19/6=20/9 razy 6/19=40/57 

Answer 2

2 1/3 : 2/5= 7/3 * 5/2 = 7 * 5/3 * 2 =35/6 = 5 5/6  = 7/3 : 2/5 = 7/3 * 5/2 =35/6 =5 5/6

 

b)  4 2/5 : 11/20=  22/5 * 20/11 = 22 * 20/5 *11 = 440 /55 =88/11 =8/1 =8

 c)  1 1/4 : 2 1/2 = 5/4 : 5/2 = 5/4 * 2/5 =10/20 =1/2

 

d) 2 2/9 : 3 1/6= 20/9 : 19/6 = 20/9 * 6/19 = 20 * 6/9 * 19 = 120 /171 =               = 40/57 =0,701754385