In a group of 12 chefs, all enjoy baking cakes and/or tarts. In fact, 7 enjoy baking cakes and 8 enjoy baking tarts. Find out how many chefs enjoy baking both cakes and tarts.

Ans = 3, i'm having trouble figuring out how to get this answer. Any help is appreciated.

4 answers

draw Venn diagram
c = 7
t = 8
intersection = i
c-i + t = 12
15 - i = 12
i = 3

so
4 cake only and 5 tart only and 3 both

thanks

Thanks so much!!