Thuy planned for a square table to have a side length of 30 in. but found that it could be a little bigger at 39 in. She found the
change of scale below.
39 in.-3 13
30 in. + 3" 10
The change of scaleis 13 to 10.
What is Thuy's error?
30 in
Thuy should have written the ratio as 3in.
Thuy should have written the ratio as
30 in
in.
Thuy should have divided both numbers by 6.
Thuy should have divided both numbers by 13.
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