Question

Sam is at the garden center and wants to buy a tree, shrug, and a set of perennial flowers. Since it is at the end of the season, the store does not have a lot to choose from. There were only 4 kinds of trees and 6 kinds of shrubs. How many different perennial flowers are there if Sam has a total of 168 choices?
A.) 6

B.) 7

C.) 36

D.) 158

Answer 1

X = number of flower choices

We have 4 times of trees and 6 kinds of shrubs and x kinds of flowers

Overall, we'll have 4*6*x = 24*x different ways to pick three items (one per type). 

Set this expression equal to 168 and solve for x

24*x = 168
24*x/24 = 168/24
x = 7

Answer: B) 7