Tiffany bought
34 as many post-it pads as correction tapes at first. After she bought another 18 post-it pads and 35 correction tapes, there were
35 as many post-it pads as correction tapes. How many post-it pads and correction tapes did Tiffany buy at first?
| |
Make p the same
(1)x5 = (3) |
Post-it Pads
(1) |
Correction Tapes
(2) |
Make p the same
(2)x3 = (4) |
| Before |
15 u |
3 u |
4 u |
12 u |
| Change |
+ 90 |
+ 18 |
+ 35 |
+ 105 |
| After |
15 p |
3 p |
5 p |
15 p |
Make p the same.
(3) = (4)
15 u + 90 = 12 u + 105
15 u - 12 u = 105 - 90
3 u = 15
1 u = 15 ÷ 3 = 5
Number of post-it pads and correction tapes that Tiffany bought at first
= 3 u + 4 u
= 7 u
= 7 x 5
= 35
Answer(s): 35
