Peter has 173 beads and Ben has 384 beads. How many beads must Ben give to Peter so that Peter will have 81 less beads than Ben?
| |
Peter |
Ben |
Total |
| Before |
173 |
384 |
557 |
| Change |
+ ? |
- ? |
|
| After |
1 u |
1 u + 81 |
557 |
The total number of beads remains unchanged after Ben gives to Peter.
Total number of beads
= 173 + 384
= 557
Total number of beads in the end
= 1 u + 1 u + 81
= 2 u + 81
2 u + 81 = 557
2 u = 557 - 81
2 u = 476
1 u = 476 ÷ 2 = 238
Number of beads that Ben must give to Peter
= 238 - 173
= 65
Answer(s): 65
