Question

Dan needs to buy tomatoes to put on 30 Turkey sandwiches if the slices of one tomatoe can go on 4 sandwiches how many tomatoes should he buy

Answer 1

Dan should buy 8 tomatoes because then he can make 32 slices which is more than enough to put on the sandwiches. 

Answer 2

30/4=7.5

Since in most places they won't let you buy 1/2 a tomato ;) he needs to buy 8 tomatoes. 

Hope that helps