There are some tarts in the jar. On Thursday, Harry ate
29 of the tarts. He later bought 25 tarts and added into the jar. On Friday, Harry ate 36 tarts. He was hungry and ate another 31 tarts. There were no tarts left. How many tarts were there in the jar at first?
|
Tarts |
Before |
9 u |
Change 1 |
- 2 u |
Change 2 |
+ 25 |
Change 3 |
- 36 |
Change 4 |
- 31 |
After |
0 |
Fraction of the tarts left after Harry first ate on Thursday
= 1 -
29=
79Number of tarts left after Harry first ate on Thursday = 7 u
7 u = 31 + 36 - 25
7 u = 42
1 u = 42 ÷ 7 = 6
Number of tarts at first
= 9 u
= 9 x 6
= 54
Answer(s): 54