Jen, Abi and Ivory had a total of 253 erasers. Jen gave
17 of her erasers away. Ivory gave away 3 times as many erasers as Jen and Abi gave away 86 erasers. In the end, they had 123 erasers left. How many erasers did Abi and Ivory have in total in the end?
| |
Jen |
Abi |
Ivory |
Total |
| Before |
7 u |
? |
? |
253 |
| Change |
- 1 u |
- 86 |
- 3 u |
- 130 |
| After |
6 u |
? |
123 |
Number of erasers that Ivory gave away
= 3 x 1 u
= 3 u
Number of erasers given away
= 1 u + 86 + 3 u
= 4 u + 86
4 u + 86 = 253 - 123
4 u = 130 - 86
4 u = 44
1 u = 44 ÷ 4 = 11
Number of erasers that Abi and Ivory had in the end
= 123 - 6 u
= 123 - 6 x 11
= 123 - 66
= 57
Answer(s): 57
