Auntie Barbara baked 90 less chocolate chip buns than apple buns. After she gave 0.8 of the chocolate chip buns to Abi and
12 of the apple buns, she was left with 60 more apple buns than chocolate chip buns. How many buns did she bake?
| |
Chocolate Chip buns |
Apple buns |
Comparing chocolate chip buns
and apple buns
at first |
|
90 more |
Before
|
5x2 =
10 |
2x5 =
10 u |
+ 90 |
Change
|
- 4x2 =
- 8 u |
- 1x5 =
- 5 u |
- 45 |
After
|
1x2 =
2 u |
1x5 =
5 u |
+ 45 |
Comparing chocolate chip buns
and apple buns
in the end |
|
60 more
|
0.8 =
810 =
4512 x 90 = 45
90 - 45 = 45
If Auntie Barbara baked another 60 chocolate chip buns, there would be equal number of apple buns and chocolate chip buns in the end.
5 u + 45 = 2 u + 60
5 u - 2 u = 60 - 45
3 u = 15
1 u = 15 ÷ 3 = 5
Total buns that Auntie Barbara baked
= 10 u + 90 + 10 u
= 20 u + 90
= 20 x 5 + 90
= 100 + 90
= 190
Answer(s): 190
