At first, Wesley had 134 more pink beads than grey beads in a box. Each day, he took out 7 pink beads and 4 grey beads from the box. After some time, he only had 10 grey beads left in the box.
- How many beads did Wesley take out from the box altogether?
- How many grey beads did Wesley have at first?
| |
Pink beads |
Grey beads |
Comparing pink beads
and grey beads at first |
134 more |
|
| Before |
7 u |
4 u + 10 |
| Change |
- 7 u |
- 4 u |
| After |
0 |
10 |
(a)
If another 134 grey beads are added into the box at first, the number of pink and grey beads will be the same.
7 u = 4 u + 10 + 134
7 u - 4 u = 10 + 134
3 u = 144
1 u = 144 ÷ 3 = 48
Number of beads that Wesley took out
= 7 u + 4 u
= 11 u
= 11 x 48
= 528
(b)
Number of beads that Wesley had at first
= 528 + 10
= 538
Answer(s): (a) 528; (b) 538
