brad wants to buy flowers for his friend with $21. The daises are $2 each and the roses are $3 dollars each.He buys 3 more daisies then roses. how much did the roses cost?

He bought X roses, and (X + 3) Daises.

3X + 2(X + 3) = $21,
3X + 2X + 6 = 21,
5X = 15,
X = 3,
3X = 3*3 = $9. = Cost of roses.

Let's break down the information step by step:

1. The cost of each daisy is $2.
2. The cost of each rose is $3.
3. Brad bought 3 more daisies than roses.
4. Brad has $21 to spend.

Let's calculate the number of roses Brad bought first.
Let's assume Brad bought x roses. Therefore, he bought x+3 daisies.

The cost of the roses Brad bought would be: $3 * x.
The cost of the daisies Brad bought would be: $2 * (x+3).

The sum of these costs should be equal to $21.

So, we can write the equation:
$3x + $2(x+3) = $21.

Now, let's solve the equation to find x and then calculate the cost of the roses:

$3x + $2x + $6 = $21
$5x + $6 = $21
$5x = $21 - $6
$5x = $15
x = $15 / $5
x = 3

Therefore, Brad bought 3 roses.

Now we can calculate the cost of the roses:
Cost of roses = $3 * 3 = $9.

So, the roses cost $9.

To find out how much the roses cost, we first need to determine how many roses Brad bought.

Let's assume that Brad bought 'x' roses.

We know that the daisies are $2 each and the roses are $3 each. Since Brad bought 3 more daisies than roses, the number of daisies Brad bought would be (x + 3).

Now, we can set up an equation to calculate the total cost of the flowers:

Total cost = (Number of roses * Cost of roses) + (Number of daisies * Cost of daisies)

Total cost = (x * $3) + [(x + 3) * $2]

Since we're given that Brad spent $21, we can set up another equation:

Total cost = $21

Now, we can equate the two equations and solve for 'x' to find the number of roses Brad bought:

(x * $3) + [(x + 3) * $2] = $21

Simplifying the equation, we get:

3x + 2(x + 3) = 21

Now solve for 'x':

3x + 2x + 6 = 21
5x + 6 = 21
5x = 21 - 6
5x = 15
x = 15 / 5
x = 3

Therefore, Brad bought 3 roses.

To find the cost of the roses, substitute the value of 'x' back into the equation:

Cost of roses = 3 * $3 = $9

So, the roses cost $9.

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