Question

brad wants to buy flowers for his friend with $45. the daisies are $1 each and the roses are $2 each. he buys 3 more daisies than roses. How much did the roses cost?

Answer 1

He buys d daisies and r roses.
His expense is 1d + 2r
The total expense is 45, so our first equation is:
d + 2r = 45

Then we are also told about the number of each flower bought:
"he buys 3 more daisies than roses"
That translates into:
d = r + 3

You need to solve the system of equations below:
d + 2r = 45
d = r + 3

Answer 2

how would i solve the system of equations

Answer 3

d + 2r = 45
d = r + 3
so
plug r+3 in for d in the first equation
r+3+2r=45
3r=42
r=?

Answer 4

r=14

Answer 5

correct

Answer 6

so the roses cost 14

Answer 7

yes
and d = 3+r = 3+ 14 = 17

Answer 8

but the roses dont cost 14 the answer was wrong

Answer 9

r = number of roses.
The solution to the equation shows that 14 roses were bought.
Each cost $2.
The money spent on roses is 14 x $2 = $28