Japheth had
310 as many marbles as Tiffany. After Japheth bought another 91 marbles, he had 14 less marbles than Tiffany. How many marbles did Japheth have at first?
| |
Japheth |
Tiffany |
| Before |
3 u |
10 u |
| Change |
+ 91 |
|
| After |
3 u + 91 |
10 u |
Tiffany had 14 more marbles than Japheth in the end. So, if Japheth had another 14 marbles, he would have the same number of marbles as Tiffany.
10 u = 3 u + 91 + 14
10 u - 3 u = 91 + 14
7 u = 105
1 u = 105 ÷ 7 = 15
Number of marbles that Japheth had at first
= 3 u
= 3 x 15
= 45
Answer: 45
