Brad wants to buy flowers for his friend with 39$. The dasies are a 1$ and the roses are 3$. He buys 3 more dasies than roses.

Question

Brad wants to buy flowers for his friend with 39$. The dasies are a 1$ and the roses are 3$. He buys 3 more dasies than roses.

Answer 1

Solving a word problem is generally just a matter of setting up a variable and then using it to write out exactly what the problem tells you, in equation form.

 

So let's choose x to represent the number of roses he buys.

 

That means that x + 3 is the number of daisies.

 

Now the roses are $3 each, so the total cost of the roses he buys is 3x.

 

And the daisies are $1 each, so the total cost of the daisies is 1 (x + 3) = x + 3.

 

So the total amount he spends is the sum of those two, 3x + (x + 3) = 4x + 3.

 

And we know that that is equal to $39.  So we have an equation!

 

4x + 3 = 39

 

Let's solve it:

 

4x + 3 = 39

4x + 3 - 3 = 39 - 3

4x = 36

4x / 4 = 36 / 4

x = 9

 

So he buys 9 roses and 12 daisies.