PSLEBetty made some buns to sell.
34 of them were egg buns and the rest were chocolate buns. After selling 360 chocolate buns and
56 of the egg buns, she had
16 of the buns left. How many buns did Betty sell?
|
Egg buns |
Chocolate buns |
Total |
Comparing egg buns and chocolate buns at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 360 |
|
After |
1x1
|
|
|
|
Egg buns |
Chocolate buns |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 360 |
|
After
|
1 u
|
2 u - 360
|
16 x 8 u = 113 u |
The number of egg buns at first is repeated. Make the number of egg buns at first the same. LCM of 3 and 6 is 6.
Number of buns left
= 1 u + 2 u - 360
= 3 u - 360
3 u - 360 = 1
13 u
3 u - 1
13 u = 360
1
23 u = 360
1 u = 360 ÷ 1
23 = 216
Total number of buns that Betty sold
= 5 u + 360
= 5 x 216 + 360
= 1080 + 360
= 1440
Answer(s): 1440