Imogen sees a design for a garden in a magazine. she changes the scale because she wants a smaller garden. the figure below
shows both scales and a scale drawing of the yard
magazine scale: 1 in.: 3.5ft
imogen's scale: 2 in.: 6 a
usa: 8 in.
b: 6 in.
c: 10 in

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

the correct answer is 5 6 and 7

it is 10.6 according to my calculations