PSLEJade made some sandwiches to sell.
34 of them were curry sandwiches and the rest were egg sandwiches. After selling 235 egg sandwiches and
56 of the curry sandwiches, she had
16 of the sandwiches left. How many sandwiches did Jade sell?
|
Curry sandwiches |
Egg sandwiches |
Total |
Comparing curry sandwiches and egg sandwiches at first |
3x2 |
1x2 |
4x2
|
Before |
6x1 |
|
|
Change |
- 5x1
|
- 235 |
|
After |
1x1
|
|
|
|
Curry sandwiches |
Egg sandwiches |
Total |
Before |
6 u |
2 u |
8 u
|
Change |
- 5 u
|
- 235 |
|
After
|
1 u
|
2 u - 235
|
16 x 8 u = 113 u |
The number of curry sandwiches at first is repeated. Make the number of curry sandwiches at first the same. LCM of 3 and 6 is 6.
Number of sandwiches left
= 1 u + 2 u - 235
= 3 u - 235
3 u - 235 = 1
13 u
3 u - 1
13 u = 235
1
23 u = 235
1 u = 235 ÷ 1
23 = 141
Total number of sandwiches that Jade sold
= 5 u + 235
= 5 x 141 + 235
= 705 + 235
= 940
Answer(s): 940