Japheth had
25 the number of stickers that Elijah had at first. After Elijah gave Japheth 120 of his stickers, Japheth had
45 the number of stickers that Elijah had. How many stickers did Elijah have in the end?
|
Japheth |
Elijah |
Total |
Before |
2x9 = 18 u |
5x9 = 45 u |
7x9 = 63 u |
Change |
+ 10 u |
- 10 u |
|
After |
4x7 = 28 u |
5x7 = 35 u |
9x7 = 63 u |
The total number of stickers that Japheth and Elijah had at first and in the end remains unchanged. Make the total number of stickers the same. LCM of 7 and 9 is 63.
Number of stickers that Elijah gave Japheth
= 28 u - 18 u
= 10 u
10 u = 120
1 u = 120 ÷ 10 = 12
Number of stickers that Elijah had in the end
= 35 u
= 35 x 12
= 420
Answer(s): 420