Auntie Risa baked 12 more strawberry buns than vanilla buns. After she gave
23 of the strawberry buns and 0.8 of the vanilla buns to Irene, she was left with 12 fewer vanilla buns than strawberry buns. How many buns did she bake?
| |
Strawberry buns |
Vanilla buns |
Comparing strawberry buns
and vanilla buns
at first |
12 more |
|
Before
|
3x5 =
15 u |
+ 12 |
5x3 =
15 u |
Change
|
- 2x5 =
- 10 u |
- 8 |
- 4x3 =
- 12 u |
After
|
1x5 =
5 u |
+ 4 |
1x3 =
3 u |
Comparing strawberry buns
and vanilla buns
in the end |
12 more
|
|
23 x 12 = 8
12 - 8 = 4
0.8 =
810 =
45If Auntie Risa baked another 12 vanilla buns, there would be equal number of strawberry buns and vanilla buns in the end.
5 u + 4 = 3 u + 12
5 u - 3 u = 12 - 4
2 u = 8
1 u = 8 ÷ 2 = 4
Total buns that Auntie Risa baked
= 15 u + 12 + 15 u
= 30 u + 12
= 30 x 4 + 12
= 120 + 12
= 132
Answer(s): 132
