Question

The height of dachshuds is usually 1/3 their length. If Molly is 20 inches long how tall is she?

Answer 1

The question is asking for 1/3 of Molly’s length, which is 20 inches. The word of in this context indicates multiplication, which means you should multiply 20 by 1/3.
1/3 x 20 = 6.666666 (repeating) or 6.7 (rounded)
Therefore, Molly is 6.7 inches tall.