Sabrina, Gabby and Gem had a total of 380 pens. Sabrina gave
16 of her pens away. Gem gave away 5 times as many pens as Sabrina and Gabby gave away 100 pens. In the end, they had 166 pens left. How many pens did Gabby and Gem have in total in the end?
| |
Sabrina |
Gabby |
Gem |
Total |
| Before |
6 u |
? |
? |
380 |
| Change |
- 1 u |
- 100 |
- 5 u |
- 214 |
| After |
5 u |
? |
166 |
Number of pens that Gem gave away
= 5 x 1 u
= 5 u
Number of pens given away
= 1 u + 100 + 5 u
= 6 u + 100
6 u + 100 = 380 - 166
6 u = 214 - 100
6 u = 114
1 u = 114 ÷ 6 = 19
Number of pens that Gabby and Gem had in the end
= 166 - 5 u
= 166 - 5 x 19
= 166 - 95
= 71
Answer(s): 71
