Oliver and Archie have a total of 85 pens. If Oliver gives Archie 35 pens, Archie will have 4 times as many pens as him. Find
(a) Oliver's pens
(b) Archie's pens
|
Oliver |
Archie |
Total |
Before |
1 u + 35 |
4 u - 35 |
85 |
Change |
- 35 |
+ 35 |
|
After |
1 u |
4 u |
5 u |
(a)
Total number of pens
= 1 u + 4 u
= 5 u
5 u = 85
1 u = 85 ÷ 5 = 17
Number of pens that Oliver has
= 1 u + 35
= 17 + 35
= 52
(b)
Number of pens that Archie has
= 85 - 52
= 33
Answer(s): (a) 52; (b) 33