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?
# or roses --- x
# of daisies -- x+3
solve for x
3x + 2(x+3) = 21
24
To find out how much the roses cost, we first need to figure out how many daisies and roses Brad bought.
Let's assume Brad bought x daisies and x+3 roses.
The cost of each daisy is $2, so the total cost of the daisies would be 2 * x.
The cost of each rose is $3, so the total cost of the roses would be 3 * (x + 3).
We know that Brad spent $21 in total, so the sum of the cost of daisies and roses should equal $21.
Putting it all together, we can form the equation:
2 * x + 3 * (x + 3) = 21
Simplifying the equation:
2x + 3x + 9 = 21
Combining like terms:
5x + 9 = 21
Subtracting 9 from both sides:
5x = 12
Dividing both sides by 5:
x = 12/5 = 2.4
Since we can't have a fraction of a flower, we round down to the nearest whole number.
Therefore, Brad bought 2 daisies and 5 roses.
The question asks for the cost of the roses, so the total cost of the roses would be:
5 * $3 = $15
Hence, the roses cost Brad $15.