Question

Michael has 5 more comic books than double David's collection. If together they have a total of 128 comics, use the equation from the previous question to find how many comics they each have.

Answer 1

Answer: Michael has 87 comic books while David has 41 comic books.

Step-by-step explanation:

Let x represent the number comic books that Michael has.

Let y represent the number of comic books that David has.

Michael has 5 more comic books than double David's collection. The expression would be

x = 2y + 5

If together they have a total of 128 comics, it means that

x + y = 128- - - - - - - - - -1

Substituting x = 2y + 5 into equation 1, it becomes

2y + 5 + y = 128

3y + 5 = 128

3y = 128 - 5

3y = 123

y = 123/3

y = 41

Substituting y = 41 into x = 2y + 5, it becomes

x = 2 × 41 + 5

x = 87