Kylie has some pens. She has 7 less pens in Bag Y than in Bag Z. After 10 pens were transferred from Bag Z to Bag Y, there were 58 pens in Bag Z.
- How many pens were there in Bag Z at first?
- How many pens were there in Bag Y in the end?
|
Bag Y |
Bag Z |
Before |
1 u |
1 u + 7 |
Change |
+ 10 |
- 10 |
After |
1 u + 10 |
58 |
(a)
Number of pens in Bag Z at first
= 58 + 10
= 68
(b)
Number of pens in Bag Y at first
= 68 - 7
= 61
Number of pens in Bag Y in the end
= 61 + 10
= 71
Answer(s): (a) 68; (b) 71