Julia collects colored beads for craft projects. Of Julia’s beads,

4/ 9
are silver,
1/5
are gold, and
1 /4
are blue. The rest of the beads are red. Which expression gives the closest estimate of the fraction of red beads Julia has?

3 answers

no choices listed, but 4/9 + 1/5 + 1/4 = 161/180
So, the remaining 19/180 are red.
That's a little more than 1/10 (18/180)
The answer is 1-2/5-1/5-1/5; how did they get this
I need help ok