Eric had
710 as many beads as Gem. After Eric gave away 79 beads, he had 85 less beads than Gem. How many beads did Gem have?
|
Eric |
Gem |
Before |
7 u |
10 u |
Change |
- 79 |
|
After |
7 u - 79 |
10 u |
Gem had 85 more beads than Eric in the end. So, if Eric had another 85 beads, he would have the same number of beads as Gem.
10 u = 7 u - 79 + 85
10 u - 7 u = 85 - 79
3 u = 6
1 u = 6 ÷ 3 = 2
Number of beads that Gem had at first
= 10 u
= 10 x 2
= 20
Answer: 20