PSLEIrene made some buns to sell.
34 of them were chicken buns and the rest were chocolate buns. After selling 275 chocolate buns and
56 of the chicken buns, she had
16 of the buns left. How many buns did Irene sell?
|
Chicken buns |
Chocolate buns |
Total |
Comparing chicken buns and chocolate buns at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 275 |
|
After |
1x1
|
|
|
|
Chicken buns |
Chocolate buns |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 275 |
|
After
|
1 u
|
2 u - 275
|
16 x 8 u = 113 u |
The number of chicken buns at first is repeated. Make the number of chicken buns at first the same. LCM of 3 and 6 is 6.
Number of buns left
= 1 u + 2 u - 275
= 3 u - 275
3 u - 275 = 1
13 u
3 u - 1
13 u = 275
1
23 u = 275
1 u = 275 ÷ 1
23 = 165
Total number of buns that Irene sold
= 5 u + 275
= 5 x 165 + 275
= 825 + 275
= 1100
Answer(s): 1100