Tim had
710 as many pens as Lucy. After Tim gave away 49 pens, he had 85 less pens than Lucy. How many pens did Lucy have?
|
Tim |
Lucy |
Before |
7 u |
10 u |
Change |
- 49 |
|
After |
7 u - 49 |
10 u |
Lucy had 85 more pens than Tim in the end. So, if Tim had another 85 pens, he would have the same number of pens as Lucy.
10 u = 7 u - 49 + 85
10 u - 7 u = 85 - 49
3 u = 36
1 u = 36 ÷ 3 = 12
Number of pens that Lucy had at first
= 10 u
= 10 x 12
= 120
Answer: 120