Justin and Andy had an equal number of mochi balls at first. Justin and Andy ate 77 and 5 mochi balls respectively. In the end, Andy has five times as many mochi balls as Justin. How many mochi balls did each of them has at first?
| |
Justin |
Andy |
| Before |
1 u + 77 |
5 u + 5 |
| Change |
- 77 |
- 5 |
| After |
1 u |
5 u |
Justin and Andy had an equal number of mochi balls at first.
5 u + 5 = 1 u + 77
5 u - 1 u = 77 - 5
4 u = 72
1 u = 72 ÷ 4 = 18
Number of mochi balls that each of them had at first
= 1 u + 77
= 18 + 77
= 95
Answer(s): 95
