Zane had
25 as many marbles as Vanessa. After Zane bought another 4 marbles, he had 14 less marbles than Vanessa. How many marbles did Zane have at first?
|
Zane |
Vanessa |
Before |
2 u |
5 u |
Change |
+ 4 |
|
After |
2 u + 4 |
5 u |
Vanessa had 14 more marbles than Zane in the end. So, if Zane had another 14 marbles, he would have the same number of marbles as Vanessa.
5 u = 2 u + 4 + 14
5 u - 2 u = 4 + 14
3 u = 18
1 u = 18 ÷ 3 = 6
Number of marbles that Zane had at first
= 2 u
= 2 x 6
= 12
Answer: 12