There are some biscuits in the jar. On Thursday, Japheth ate
47 of the biscuits. He later bought 20 biscuits and added into the jar. On Friday, Japheth ate 36 biscuits. He was hungry and ate another 29 biscuits. There were no biscuits left. How many biscuits were there in the jar at first?
|
Biscuits |
Before |
7 u |
Change 1 |
- 4 u |
Change 2 |
+ 20 |
Change 3 |
- 36 |
Change 4 |
- 29 |
After |
0 |
Fraction of the biscuits left after Japheth first ate on Thursday
= 1 -
47=
37Number of biscuits left after Japheth first ate on Thursday = 3 u
3 u = 29 + 36 - 20
3 u = 45
1 u = 45 ÷ 3 = 15
Number of biscuits at first
= 7 u
= 7 x 15
= 105
Answer(s): 105