Xuan, Shiyun and Emily had a total of 270 beads. Xuan gave
310 of her beads away. Emily gave away 2 times as many beads as Xuan and Shiyun gave away 70 beads. In the end, they had 173 beads left. How many beads did Shiyun and Emily have in total in the end?
|
Xuan |
Shiyun |
Emily |
Total |
Before |
10 u |
? |
? |
270 |
Change |
- 3 u |
- 70 |
- 6 u |
- 97 |
After |
7 u |
? |
173 |
Number of beads that Emily gave away
= 2 x 3 u
= 6 u
Number of beads given away
= 3 u + 70 + 6 u
= 9 u + 70
9 u + 70 = 270 - 173
9 u = 97 - 70
9 u = 27
1 u = 27 ÷ 9 = 3
Number of beads that Shiyun and Emily had in the end
= 173 - 7 u
= 173 - 7 x 3
= 173 - 21
= 152
Answer(s): 152