The ratio of red poms to yellow poms on a float is 5 to 7. If there are 392 yellow poms, on the float, how many red poms are there? A. 549
B. 390
C. 280
D. 56

Plz heeeeeeelp plz give me the answer

Me n o w. i need t h i s. 10 points

Alex took his brother to a birthday party. the party was scheduled to last for 1 and 3/4 hours but they stayed for 4/5 of an hour more. how long did she stay at the party?