Mrs Lee baked some shortbreads. She gave
47 of the shortbreads to her mother and
29 of the remainder to her father. Given that she gave 20 less shortbreads to her father than her mother. How many shortbreads did
she bake at first?
| Mother |
Remainder |
Total |
| 4x3 |
3x3 |
7x3 |
| |
Father |
Left |
|
| 12 u |
2 u |
7 u |
21 u |
Number of less shortbreads that Mrs Lee gave to her father than her mother
= 12 u - 2 u
= 10 u
10 u = 20
1 u = 20 ÷ 10 = 2
Number of shortbreads that Mrs Lee baked at first
= 21 u
= 21 x 2
= 42
Answer(s): 42
