Question

Marie has a small copy of rene magritte's famous painting, the schoolmaster. Her copy has dimensions 2 inches by 1.5 inches. The scale of the copy is 1 in :40 cm. Find the dimensions of the original painting

Answer 1

We just multiply the scale to the dimensions
2 in to original is: 2×40= 80 cm
or do proportions:

`(2)/(x)`=
`(1)/(40)`
=
`(2*40)/(1)`=x
=80 cm=x the original dimension.
Same thing to the other side.
1.5×40=60 cm
or proportions again:

`(1.5)/(y)`=
`(1)/(40)`

`(1.5*40)/(1)`=y
60 cm=y
60 cm is the original dimension
80 cm times 60 cm ORIGINAL DIMENSION