Betty bought some eggs to bake cakes for a party. If she used 8 eggs for each cake, she would be short of 3 more eggs to bake all cakes. If she used 10 eggs for each cake, she would be short of 43 more eggs.
- How many cakes did she bake?
- How many eggs did Betty buy?
(a)
Small difference
= 10 - 8
= 2
Big difference
= 43 - 3
= 40
Number of cakes that Betty bought
= 40 ÷ 2
= 20
(b)
Number of eggs that Betty bought
= 20 x 8 - 3
= 160 - 3
= 157
Answer(s): (a) 20; (b) 157