Winnie, Shannon and Lynn had a total of 397 erasers. Winnie gave
35 of her erasers away. Lynn gave away 4 times as many erasers as Winnie and Shannon gave away 79 erasers. In the end, they had 198 erasers left. How many erasers did Shannon and Lynn have in total in the end?
| |
Winnie |
Shannon |
Lynn |
Total |
| Before |
5 u |
? |
? |
397 |
| Change |
- 3 u |
- 79 |
- 12 u |
- 199 |
| After |
2 u |
? |
198 |
Number of erasers that Lynn gave away
= 4 x 3 u
= 12 u
Number of erasers given away
= 3 u + 79 + 12 u
= 15 u + 79
15 u + 79 = 397 - 198
15 u = 199 - 79
15 u = 120
1 u = 120 ÷ 15 = 8
Number of erasers that Shannon and Lynn had in the end
= 198 - 2 u
= 198 - 2 x 8
= 198 - 16
= 182
Answer(s): 182
