1.

a:b::2:1, b:c::3:2,c:d ::3:4,d:e::5:2 find a:b:c:d:e.

Answer»

`60:30:15:44:17`
`80:40:15:20:19`
`90:45:30:40:16`
`77:15:19:20:16`

ANSWER :C


Discussion

No Comment Found