Emma has some pens. She has 18 less pens in Box M than in Box N. After 23 pens were transferred from Box N to Box M, there were 67 pens in Box N.
- How many pens were there in Box N at first?
- How many pens were there in Box M in the end?
|
Box M |
Box N |
Before |
1 u |
1 u + 18 |
Change |
+ 23 |
- 23 |
After |
1 u + 23 |
67 |
(a)
Number of pens in Box N at first
= 67 + 23
= 90
(b)
Number of pens in Box M at first
= 90 - 18
= 72
Number of pens in Box M in the end
= 72 + 23
= 95
Answer(s): (a) 90; (b) 95