Share 40 in the ratio 1:4

1/5 x 40 = 8

4/5 x 40 = 32

so, therefore, 1 is 8

and 4 will be 32

to check, 8+32 = 40

Since the ratio is 1:4, the total, 40, is a multiple of 5 times the value of each part of the ratio ...

Each part of the ratio is then valued at 40/5=8 so the ratio of 1:4 applied to a total of 40 is

1*8:4*8

8:32