Albert and Jack have a total of 80 stamps. If Albert gives Jack 16 stamps, Jack will have 4 times as many stamps as him. Find
(a) Albert's stamps
(b) Jack's stamps
|
Albert |
Jack |
Total |
Before |
1 u + 16 |
4 u - 16 |
80 |
Change |
- 16 |
+ 16 |
|
After |
1 u |
4 u |
5 u |
(a)
Total number of stamps
= 1 u + 4 u
= 5 u
5 u = 80
1 u = 80 ÷ 5 = 16
Number of stamps that Albert has
= 1 u + 16
= 16 + 16
= 32
(b)
Number of stamps that Jack has
= 80 - 32
= 48
Answer(s): (a) 32; (b) 48