Divide £48 in the ratio 7:5

For a ratio of 7:5 you will need 7+5 = 12 parts

48/12 = 4  is the size of a part

7 parts = 7 x4 = 28

5 parts = 5 x4=  20

the ratio of 7:5  is thus   28:20     for a total of  L 48

48 to the ratio 4:7:5