Bunuel wrote:
Brian purchased a bouquet of 40 flowers for his mother for her birthday. If roses cost $1.50 and tulips cost $1.00, and he spent $48 in total buying only those two types of flowers, how many tulips were in the bouquet?
A. 12
B. 16
C. 20
D. 24
E. 28
We can let the number of tulips = t and the number of roses = r and create the following equations:
t + r = 40
t = 40 - r
and
1.5r + t = 48
Thus:
1.5r + 40 - r = 48
0.5r = 8
r = 16
So, t = 40 - 16 = 24.
Answer: D
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