Jane, Gem and Anna had a total of 279 erasers. Jane gave
16 of her erasers away. Anna gave away 2 times as many erasers as Jane and Gem gave away 97 erasers. In the end, they had 155 erasers left. How many erasers did Gem and Anna have in total in the end?
|
Jane |
Gem |
Anna |
Total |
Before |
6 u |
? |
? |
279 |
Change |
- 1 u |
- 97 |
- 2 u |
- 124 |
After |
5 u |
? |
155 |
Number of erasers that Anna gave away
= 2 x 1 u
= 2 u
Number of erasers given away
= 1 u + 97 + 2 u
= 3 u + 97
3 u + 97 = 279 - 155
3 u = 124 - 97
3 u = 27
1 u = 27 ÷ 3 = 9
Number of erasers that Gem and Anna had in the end
= 155 - 5 u
= 155 - 5 x 9
= 155 - 45
= 110
Answer(s): 110