Question

Which of the following equations will lead you to find the number of books bought by one of two sisters, if the other one bought 8 books and together they bought 20 books?x + 8 = 20x - 8 = 208x = 20x/8 = 20

Answer 1

Explanation

So two sisters bought books. One bought a total of 8 books and the other a total of x books. If together they bought 20 books then the sum of the amount of books bought by each sister must be equal to 20. Therefore the equation describing this situation is:

$x+8=20$Answer

Then the answer is the first option.