Barbara, Xylia and Gwen had a total of 293 erasers. Barbara gave
15 of her erasers away. Gwen gave away 2 times as many erasers as Barbara and Xylia gave away 87 erasers. In the end, they had 197 erasers left. How many erasers did Xylia and Gwen have in total in the end?
|
Barbara |
Xylia |
Gwen |
Total |
Before |
5 u |
? |
? |
293 |
Change |
- 1 u |
- 87 |
- 2 u |
- 96 |
After |
4 u |
? |
197 |
Number of erasers that Gwen gave away
= 2 x 1 u
= 2 u
Number of erasers given away
= 1 u + 87 + 2 u
= 3 u + 87
3 u + 87 = 293 - 197
3 u = 96 - 87
3 u = 9
1 u = 9 ÷ 3 = 3
Number of erasers that Xylia and Gwen had in the end
= 197 - 4 u
= 197 - 4 x 3
= 197 - 12
= 185
Answer(s): 185