Question

Carlos and Michael are collecting baseball cards. Carlos has 85 and buys 10 more each week. Michael has 120 and receives 5 more from his uncle every week.

When will Carlos and Michael have the same amount?
A
in 2 weeks

B
in 7 weeks

C
They will never have the same amount since Michael had more to begin with.

D
in 10 weeks

Answer 1

Make two equations:

Carlos: y=10x+85

Michael: y=5x+120

Set them equal to each other and solve:

10x+85=5x+120

5x+85=120

5x=35

x=7

So therefore, B is the correct answer

Hope this helped!