Kimberly had 19 more biscuits than Roshel at first. After Kimberly ate 3 biscuits, she had five times as many biscuits as Roshel in the end. How many biscuits did Roshel have?
| |
Roshel |
Kimberly |
| Before |
1 u |
1 u + 19 |
| Change |
|
- 3 |
| After |
1 u |
1 u + 16 |
Comparing Roshel
and Kimberly in the end |
1 u |
5 u |
The number of biscuits that Roshel had remains unchanged.
Number of biscuits that Kimberly had in the end
= 5 x 1 u
= 5 u
5 u = 1 u + 16
5 u - 1 u = 16
4 u = 16
1 u = 16 ÷ 4 = 4
Number of biscuits that Roshel had
= 1 u
= 4
Answer(s): 4
