Abi bought some eggs to bake cakes for a party. If she used 3 eggs for each cake, she would be short of 9 more eggs to bake all cakes. If she used 8 eggs for each cake, she would be short of 54 more eggs.
- How many cakes did she bake?
- How many eggs did Abi buy?
(a)
Small difference
= 8 - 3
= 5
Big difference
= 54 - 9
= 45
Number of cakes that Abi bought
= 45 ÷ 5
= 9
(b)
Number of eggs that Abi bought
= 9 x 3 - 9
= 27 - 9
= 18
Answer(s): (a) 9; (b) 18