Xuan baked 35 wafers. She ate
37 of them.
- How many wafers had she eaten?
- How many wafers had she left?
(a)
Total number of wafers baked = 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Number of wafers that Xuan ate
= 3 u
= 3 x 5
= 15
(b)
Number of wafers that Xuan had left
= 35 - 15
= 20
Answer(s) : (a) 15; (b) 20