Question

Janine wants a necklace 45 beads long 

Answer 1

Answer:

9 red and 36 blue

Step-by-step explanation:

1+4=5 so 45/5=9

Answer 2

If there are 45 beads, with a ratio of $1:4$
Then,
$\frac{45}{5}=9$
Then if $\frac{1}{4}=\frac{9}{x}$
Then $x=9*4$
Therefore, $x=36$
Meaning, there would be a ratio of 36 beads to 9 beads