John and Owen have a total of 80 pens. If John gives Owen 27 pens, Owen will have 4 times as many pens as him. Find
(a) John's pens
(b) Owen's pens
|
John |
Owen |
Total |
Before |
1 u + 27 |
4 u - 27 |
80 |
Change |
- 27 |
+ 27 |
|
After |
1 u |
4 u |
5 u |
(a)
Total number of pens
= 1 u + 4 u
= 5 u
5 u = 80
1 u = 80 ÷ 5 = 16
Number of pens that John has
= 1 u + 27
= 16 + 27
= 43
(b)
Number of pens that Owen has
= 80 - 43
= 37
Answer(s): (a) 43; (b) 37