Auntie Roshel baked 21 more apple buns than blueberry buns. After she gave
57 of the apple buns and 0.8 of the blueberry buns to Opal, she was left with 27 fewer blueberry buns than apple buns. How many buns did she bake?
| |
Apple buns |
Blueberry buns |
Comparing apple buns
and blueberry buns
at first |
21 more |
|
Before
|
7x5 =
35 u |
+ 21 |
5x7 =
35 u |
Change
|
- 5x5 =
- 25 u |
- 15 |
- 4x7 =
- 28 u |
After
|
2x5 =
10 u |
+ 6 |
1x7 =
7 u |
Comparing apple buns
and blueberry buns
in the end |
27 more
|
|
57 x 21 = 15
21 - 15 = 6
0.8 =
810 =
45If Auntie Roshel baked another 27 blueberry buns, there would be equal number of apple buns and blueberry buns in the end.
10 u + 6 = 7 u + 27
10 u - 7 u = 27 - 6
3 u = 21
1 u = 21 ÷ 3 = 7
Total buns that Auntie Roshel baked
= 35 u + 21 + 35 u
= 70 u + 21
= 70 x 7 + 21
= 490 + 21
= 511
Answer(s): 511
