Question

janine wants a necklace 45 beads long 

how many red and blue beads does she need

the ratio is 1:4

Answer 1

9 red and 36 blue

Explanation:

1+4=5 so 45/5=9

Answer 2

If there are 45 beads, with a ratio of
`1:4`
Then,

`(45)/(5)=9`
Then if
`(1)/(4)=(9)/(x)`
Then
`x=9*4`
Therefore,
`x=36`
Meaning, there would be a ratio of 36 beads to 9 beads