Diana, Joelle and Anna had a total of 288 stamps. Diana gave
25 of her stamps away. Anna gave away 3 times as many stamps as Diana and Joelle gave away 69 stamps. In the end, they had 139 stamps left. How many stamps did Joelle and Anna have in total in the end?
|
Diana |
Joelle |
Anna |
Total |
Before |
5 u |
? |
? |
288 |
Change |
- 2 u |
- 69 |
- 6 u |
- 149 |
After |
3 u |
? |
139 |
Number of stamps that Anna gave away
= 3 x 2 u
= 6 u
Number of stamps given away
= 2 u + 69 + 6 u
= 8 u + 69
8 u + 69 = 288 - 139
8 u = 149 - 69
8 u = 80
1 u = 80 ÷ 8 = 10
Number of stamps that Joelle and Anna had in the end
= 139 - 3 u
= 139 - 3 x 10
= 139 - 30
= 109
Answer(s): 109