Reggie had
310 as many erasers as Linda. After Reggie bought another 75 erasers, he had 16 less erasers than Linda. How many erasers did Reggie have at first?
| |
Reggie |
Linda |
| Before |
3 u |
10 u |
| Change |
+ 75 |
|
| After |
3 u + 75 |
10 u |
Linda had 16 more erasers than Reggie in the end. So, if Reggie had another 16 erasers, he would have the same number of erasers as Linda.
10 u = 3 u + 75 + 16
10 u - 3 u = 75 + 16
7 u = 91
1 u = 91 ÷ 7 = 13
Number of erasers that Reggie had at first
= 3 u
= 3 x 13
= 39
Answer: 39
