Marie has twice as many books as David has. Together they have 18 books. Which of the following equations can be used to find the number of books that David has?
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Answered by
0
Answer:
Step-by-step explanation:
Let the number of books David has be x
Then the number of books Marie has is 2x
Together they have 18 books
2x+x= 18
3x=18
x=18/3
x=6
2x= 6*2=12
therefore, Marie has 12 books while David has 6 books
Answered by
0
Answer:
6
Step-by-step explanation:
Books David has=Total books-books Marie has
Lets take books David has = x and books Marie has =2x
Total books =Books David has +Books Marie has
= x + 2x =18
=3x =18
x = 18/3
x = 6
Books Marie has = 2x which is 2 x 6
=12
Books David has =total books - books Marie has = 18 - 12
=6
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