PSLEGem made some buns to sell.
34 of them were beef buns and the rest were egg buns. After selling 392 egg buns and
56 of the beef buns, she had
15 of the buns left. How many buns did Gem sell?
|
Beef buns |
Egg buns |
Total |
Comparing beef buns and egg buns at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 392 |
|
After |
1x1
|
|
|
|
Beef buns |
Egg buns |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 392 |
|
After
|
1 u
|
2 u - 392
|
15 x 8 u = 135 u |
The number of beef buns at first is repeated. Make the number of beef buns at first the same. LCM of 3 and 6 is 6.
Number of buns left
= 1 u + 2 u - 392
= 3 u - 392
3 u - 392 = 1
35 u
3 u - 1
35 u = 392
1
25 u = 392
1 u = 392 ÷ 1
25 = 280
Total number of buns that Gem sold
= 5 u + 392
= 5 x 280 + 392
= 1400 + 392
= 1792
Answer(s): 1792