Emma bought
34 as many correction tapes as notebooks at first. After she bought another 19 correction tapes and 65 notebooks, there were
25 as many correction tapes as notebooks. How many correction tapes and notebooks did Emma buy at first?
| |
Make p the same
(1)x5 = (3) |
Correction Tapes
(1) |
Notebooks
(2) |
Make p the same
(2)x2 = (4) |
| Before |
15 u |
3 u |
4 u |
8 u |
| Change |
+ 95 |
+ 19 |
+ 65 |
+ 130 |
| After |
10 p |
2 p |
5 p |
10 p |
Make p the same.
(3) = (4)
15 u + 95 = 8 u + 130
15 u - 8 u = 130 - 95
7 u = 35
1 u = 35 ÷ 7 = 5
Number of correction tapes and notebooks that Emma bought at first
= 3 u + 4 u
= 7 u
= 7 x 5
= 35
Answer(s): 35
