Tina, Sarah and Emma had a total of 326 pens. Tina gave
25 of her pens away. Emma gave away 4 times as many pens as Tina and Sarah gave away 42 pens. In the end, they had 164 pens left. How many pens did Sarah and Emma have in total in the end?
| |
Tina |
Sarah |
Emma |
Total |
| Before |
5 u |
? |
? |
326 |
| Change |
- 2 u |
- 42 |
- 8 u |
- 162 |
| After |
3 u |
? |
164 |
Number of pens that Emma gave away
= 4 x 2 u
= 8 u
Number of pens given away
= 2 u + 42 + 8 u
= 10 u + 42
10 u + 42 = 326 - 164
10 u = 162 - 42
10 u = 120
1 u = 120 ÷ 10 = 12
Number of pens that Sarah and Emma had in the end
= 164 - 3 u
= 164 - 3 x 12
= 164 - 36
= 128
Answer(s): 128
