Vincent had
25 as many marbles as Abi. After Vincent bought another 41 marbles, he had 19 less marbles than Abi. How many marbles did Vincent have at first?
| |
Vincent |
Abi |
| Before |
2 u |
5 u |
| Change |
+ 41 |
|
| After |
2 u + 41 |
5 u |
Abi had 19 more marbles than Vincent in the end. So, if Vincent had another 19 marbles, he would have the same number of marbles as Abi.
5 u = 2 u + 41 + 19
5 u - 2 u = 41 + 19
3 u = 60
1 u = 60 ÷ 3 = 20
Number of marbles that Vincent had at first
= 2 u
= 2 x 20
= 40
Answer: 40
