Set up a proportion

x is the estimated number of returned phones. cross multiply to find x
12 x 2000 = 24000
350 x X = 350x
24000=350x
Divide
x=68.57
B.) 68
We need to write a proportion to solve this
7/3=35/x
105=7x
divide each side by 7
15=x so, there were 15 burgers without cheese.
We could add the cheese burgers 35 to burgers without cheese 15
35+15=50 burgers were sold.
There were 12 baby dinosaurs and 4 adult dinosaurs making the painting.
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Equation</h3>
An equation is an expression used to show the relationship between two or more numbers and variables.
Let x represent the number of baby dinosaurs and y represent the number of adult dinosaurs.
Since there was 208 paintings, hence:
Also:
From equation 1 and 2:
x = 12, y = 4
There were 12 baby dinosaurs and 4 adult dinosaurs making the painting.
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