Gabby bought some eggs to bake cakes for a party. If she used 9 eggs for each cake, she would be short of 17 more eggs to bake all cakes. If she used 12 eggs for each cake, she would be short of 71 more eggs.
- How many cakes did she bake?
- How many eggs did Gabby buy?
(a)
Small difference
= 12 - 9
= 3
Big difference
= 71 - 17
= 54
Number of cakes that Gabby bought
= 54 ÷ 3
= 18
(b)
Number of eggs that Gabby bought
= 18 x 9 - 17
= 162 - 17
= 145
Answer(s): (a) 18; (b) 145