For homework, Anya had to find the width of a bedroom
after the scale changed from 1 inch : 4 feet to 1 inch : 7
feet. Her work is shown below.
What error did Anya make?
O She set up the proportion incorrectly; the second
ratio should be 2.
1 inch: 4 feet
1 inch : 7 feet
4 in.
O She cross-multiplied incorrectly.
O She divided incorrectly.
2 in.
O She used the wrong label; it should be inches.
7x=2
x= = feet