There are some puffs in the jar. On Saturday, Peter ate
49 of the puffs. He later bought 23 puffs and added into the jar. On Sunday, Peter ate 37 puffs. He was hungry and ate another 36 puffs. There were no puffs left. How many puffs were there in the jar at first?
|
Puffs |
Before |
9 u |
Change 1 |
- 4 u |
Change 2 |
+ 23 |
Change 3 |
- 37 |
Change 4 |
- 36 |
After |
0 |
Fraction of the puffs left after Peter first ate on Saturday
= 1 -
49=
59Number of puffs left after Peter first ate on Saturday = 5 u
5 u = 36 + 37 - 23
5 u = 50
1 u = 50 ÷ 5 = 10
Number of puffs at first
= 9 u
= 9 x 10
= 90
Answer(s): 90