The ratio of red poems to yellow poems on a float is 5 to 7. If there are 392 yellow poems on the float, how many red poems are there?

I'm not sure what a poem on a float is so lets we know that red to yellow is 5:7 there are 392 yellow total so if we divide 392 by 7 (because R:Y=5:7) and multiply by the ratio of red (5) we get (392/7) times 5=red 56 times 5=280

R/y = 5/7

r/392=5/7

r=392x5/7

=280