If we convert 3 3/5 into an informal fraction, it would be 18/5 (3*5+3 for the numerator) and 1 4/5 would be 9/5 (1*5+4 for the numerator). 18/5 divided by 9/5 is the same as 18/5 * 5/9 (the reciprocal of 9/5) which equals 2. Therefore she can make 2 pairs of pants.
