Diana bought some eggs to bake cakes for a party. If she used 7 eggs for each cake, she would be short of 9 more eggs to bake all cakes. If she used 9 eggs for each cake, she would be short of 47 more eggs.
- How many cakes did she bake?
- How many eggs did Diana buy?
(a)
Small difference
= 9 - 7
= 2
Big difference
= 47 - 9
= 38
Number of cakes that Diana bought
= 38 ÷ 2
= 19
(b)
Number of eggs that Diana bought
= 19 x 7 - 9
= 133 - 9
= 124
Answer(s): (a) 19; (b) 124