Last Friday, Ben had twice as many beads as Zane. Today, Ben gives 70 of his beads to his sister. Now, Zane has four times as many beads as Ben. How many beads does Zane have?
| |
Ben |
Zane |
| Before |
2x4 =
8 u |
1x4 =
4 u |
| Change |
- 70 |
|
| After |
1 u |
4 u |
The number of beads that Zane had at first and in the end remains unchanged. Make the number of beads that Zane has the same. LCM of 1 and 4 is 4.
Number of beads that Ben gives to his sister
= 8 u - 1 u
= 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Number of beads that Zane has
= 4 u
= 4 x 10
= 40
Answer(s): 40
