Many supersonic jet aircraft in the past have used triangular wings called delta wings. Below is a scale drawing of the top of a
delta wing. Scale: 2 centimeters (cm) in the drawing = 192 cm on the actual wing. What is the length of the actual?
2 answers:
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To solve this you can make a proportion where the matching sides will correspond to each other. It should look something like this:
Now you must cross multiply
10*42 = 15*x
420= 15x
To isolate x divide 15 to both sides
420/15 = 15x/15
28 = x
Hope this helped!
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