Answer:
2
Step-by-step explanation:
Angela has a marbles.
Brian has twice as many as Angela, so Brain has 2a.
Caden has three times as many as Brain, so Caden has 3(2a)=6a.
Daryl has five times the number of marbles as Caden, so Daryl has 5(6a)=30a.
We are given that these 4 people together have 78 marbles.
Angela's + Brain's + Caden's + Daryl's =78
a + 2a + 6a + 30a =78
Combine the like terms:
39a=78
Divide both sides by 39:
a=78/39
a=2
