Which ratio is less than 7/15?
Repeating the successful method,
Let's make then all the same "size"
We have 7/15 = 21/45
and
A. 9/15 = 27/45
B. 2/5 = 18/45
C. 3/5 = 27/45
D. 24/45 = 25/45
By inspection, B = 18/45 is less than 7/15 = 21/45
Answer: B = 2/5