Question

a)10/x=4/5 b)7/0,2=28/x

Answer 1

a)

10/x=4/5

4x = 5 * 10

4x = 50

x = 50/4

x = 25/2

x = 12 i 1/2

 

b)

7/0,2=28/x

7 * x = 0,2 * 28

7x = 5,6

x = 5,6 : 7

x = 0,8