Sabrina bought some eggs to bake cakes for a party. If she used 9 eggs for each cake, she would be short of 7 more eggs to bake all cakes. If she used 13 eggs for each cake, she would be short of 67 more eggs.
- How many cakes did she bake?
- How many eggs did Sabrina buy?
(a)
Small difference
= 13 - 9
= 4
Big difference
= 67 - 7
= 60
Number of cakes that Sabrina bought
= 60 ÷ 4
= 15
(b)
Number of eggs that Sabrina bought
= 15 x 9 - 7
= 135 - 7
= 128
Answer(s): (a) 15; (b) 128