Sabrina bought some eggs to bake cakes for a party. If she used 9 eggs for each cake, she would be short of 15 more eggs to bake all cakes. If she used 13 eggs for each cake, she would be short of 75 more eggs.
- How many cakes did she bake?
- How many eggs did Sabrina buy?
(a)
Small difference
= 13 - 9
= 4
Big difference
= 75 - 15
= 60
Number of cakes that Sabrina bought
= 60 ÷ 4
= 15
(b)
Number of eggs that Sabrina bought
= 15 x 9 - 15
= 135 - 15
= 120
Answer(s): (a) 15; (b) 120