Betty had 6 less jelly beans than Emma. Emma used
34 of her jelly beans and Betty used
45 of her jelly beans. In the end, Emma had 2 times as much as Betty. Find the number of jelly beans that Emma had at first.
| |
Emma |
Betty |
Comparing Emma
and Parry at first |
|
6 less |
| Before |
4x2 =
8 u |
5 u |
| Change |
- 3x2 =
- 6 u |
- 4 u |
| After |
1x2 =
2 u |
1 u |
Comparing Emma
and Parry in the end |
2 u |
1 u |
The number of jelly beans that Emma had in the end is repeated. Make the number of jelly beans that Emma had in the end the same. LCM of 1 and 2 is 2.
Number of jelly beans that Betty had less than Emma
= 8 u - 5 u
= 3 u
3 u = 6
1 u = 6 ÷ 3 = 2
Number of jelly beans that Emma had at first
= 8 u
= 8 x 2
= 16
Answer(s): 16
