Area of a rectangle =length*width
length=18ft=18/3=6yds
width=12ft=12/3=4yds
answer:
We are given
selling price of one flower is $0.50
so, 
Let's assume
she sold 'n' flowers to get $20
so, total amount she get after selling 'n' flowers is


This is supposed to be $20
so, we can set it equal to 20

now, we can solve for n
we get

we are given
she makes $6.00 on every $20 worth sold
so, we can find cost of 40 flowers is 20-6
total cost is 14
or cost of 40 flowers is $14
now, we can find cost of one flower


so, cost of each flower is 35 cents...............Answer
Answer:
the correct answer is 8.7
John sold 10 hamburgers and 14 cheeseburgers.
Step-by-step explanation:
Given,
Cost of one hamburger = $3
Cost of one cheeseburger = $3.50
Total burgers sold = 24
Total revenue earned = $79
Let,
Number of hamburgers sold = x
Number of cheeseburgers sold = y
According to given statement;
x+y=24 Eqn 1
3x+3.50y=79 Eqn 2
Multiplying Eqn 1 by 3

Subtracting Eqn 3 from Eqn 2

Dividing both sides by 0.50

Putting y=14 in Eqn 1

John sold 10 hamburgers and 14 cheeseburgers.
Keywords: linear equation, elimination method
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