Tammy had 5 times as many buttons as Usha at first. After Tammy gave 42 buttons to Usha, they each had the same number of buttons in the end. How many buttons did Tammy have at first?
| |
Tammy |
Usha |
| Before |
5 u |
1 u |
| Change |
- 42 |
+ 42 |
| After |
5 u - 42 |
1 u + 42 |
Comparing Tammy and
Usha in the end |
1 |
1 |
The number of buttons that Tammy and Usha had in the end is equal.
5 u - 42 = 1 u + 42
5 u - 1 u = 42 + 42
4 u = 84
1 u = 21
Number of buttons that Tammy had at first
= 5 u
= 5 x 21
= 105
Answer(s): 105
