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Marina86 [1]
3 years ago
14

Zachary and his children went into a bakery and he bought $15 worth of cupcakes and brownies. Each cupcake costs $3 and each bro

wnie costs $1.50. He bought 3 times as many brownies as cupcakes. Determine the number of cupcakes and the number of brownies that Zachary bought.

Mathematics
2 answers:
goblinko [34]3 years ago
8 0

Step-by-step explanation:

the answer is

Y=2.5

X=3.75

Oliga [24]3 years ago
8 0

Answer:

6 brownies and 2 cupcakes.

Step-by-step explanation:

Let the number of brownies be b and the number of cupckes be c.

We have the following system:

b = 3c

1.5b + 3c = 15

Substituting for  b in the second equation:

4.5c  + 3c = 15

7.5c = 15

c =  2.

Thus b = 3c = 6.

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