Tim bought 48 more stamps than Paul and Paul bought 20 stamps more than Risa. The total number of stamps Tim and Paul bought was 4 times the number of stamps Risa bought.
- How many stamps does Tim need to give Paul so that they have the same number of stamps?
- How many stamps did all three of them have altogether?
Tim |
Paul |
Risa |
1 u + 20 + 48 |
1 u + 20 |
1 u |
4 u |
1 u |
(a)
Number of stamps that Tim needs to give Paul so that they have same number of stamps
= 48 ÷ 2
= 24
(b)
Total number of stamps that Tim and Paul had
= 1 u + 20 + 48 + 1 u + 20
= 1 u + 1 u + 20 + 48 + 20
= 2 u + 88
4 u = 2 u + 88
4 u - 2 u = 88
2 u = 88
1 u = 88 ÷ 2 = 44
Total number of stamps that all three of them had
= 4 u + 1 u
= 5 u
= 5 x 44
= 220
Answer(s): (a) 24; (b) 220