Mrs Billy baked some cookies. She gave
25 of the cookies to her mother and
49 of the remainder to her cousin. Given that she gave 18 less cookies to her cousin than her mother. How many cookies did
she bake at first?
| Mother |
Remainder |
Total |
| 2x3 |
3x3 |
5x3 |
| |
Cousin |
Left |
|
| 6 u |
4 u |
5 u |
15 u |
Number of less cookies that Mrs Billy gave to her cousin than her mother
= 6 u - 4 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Number of cookies that Mrs Billy baked at first
= 15 u
= 15 x 9
= 135
Answer(s): 135
