There are some biscuits in the jar. On Wednesday, Dylan ate
27 of the biscuits. He later bought 22 biscuits and added into the jar. On Thursday, Dylan ate 47 biscuits. He was hungry and ate another 40 biscuits. There were no biscuits left. How many biscuits were there in the jar at first?
|
Biscuits |
Before |
7 u |
Change 1 |
- 2 u |
Change 2 |
+ 22 |
Change 3 |
- 47 |
Change 4 |
- 40 |
After |
0 |
Fraction of the biscuits left after Dylan first ate on Wednesday
= 1 -
27=
57Number of biscuits left after Dylan first ate on Wednesday = 5 u
5 u = 40 + 47 - 22
5 u = 65
1 u = 65 ÷ 5 = 13
Number of biscuits at first
= 7 u
= 7 x 13
= 91
Answer(s): 91