Mary, Kylie and Sarah had a total of 228 coins. Mary gave
25 of her coins away. Sarah gave away 5 times as many coins as Mary and Kylie gave away 28 coins. In the end, they had 104 coins left. How many coins did Kylie and Sarah have in total in the end?
| |
Mary |
Kylie |
Sarah |
Total |
| Before |
5 u |
? |
? |
228 |
| Change |
- 2 u |
- 28 |
- 10 u |
- 124 |
| After |
3 u |
? |
104 |
Number of coins that Sarah gave away
= 5 x 2 u
= 10 u
Number of coins given away
= 2 u + 28 + 10 u
= 12 u + 28
12 u + 28 = 228 - 104
12 u = 124 - 28
12 u = 96
1 u = 96 ÷ 12 = 8
Number of coins that Kylie and Sarah had in the end
= 104 - 3 u
= 104 - 3 x 8
= 104 - 24
= 80
Answer(s): 80
