At first, Brandon had 197 more white beads than green beads in a box. Each day, he took out 10 white beads and 2 green beads from the box. After some time, he only had 27 green beads left in the box.
- How many beads did Brandon take out from the box altogether?
- How many green beads did Brandon have at first?
| |
White beads |
Green beads |
Comparing white beads
and green beads at first |
197 more |
|
| Before |
10 u |
2 u + 27 |
| Change |
- 10 u |
- 2 u |
| After |
0 |
27 |
(a)
If another 197 green beads are added into the box at first, the number of white and green beads will be the same.
10 u = 2 u + 27 + 197
10 u - 2 u = 27 + 197
8 u = 224
1 u = 224 ÷ 8 = 28
Number of beads that Brandon took out
= 10 u + 2 u
= 12 u
= 12 x 28
= 336
(b)
Number of beads that Brandon had at first
= 336 + 27
= 363
Answer(s): (a) 336; (b) 363
