Mrs Ethan baked some wafers. She gave
25 of the wafers to her niece and
29 of the remainder to her nephew. Given that she gave 20 less wafers to her nephew than her niece. How many wafers did
she bake at first?
| Niece |
Remainder |
Total |
| 2x3 |
3x3 |
5x3 |
| |
Nephew |
Left |
|
| 6 u |
2 u |
7 u |
15 u |
Number of less wafers that Mrs Ethan gave to her nephew than her niece
= 6 u - 2 u
= 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Number of wafers that Mrs Ethan baked at first
= 15 u
= 15 x 5
= 75
Answer(s): 75
