Question

When comparing twenty-three forty-seconds to one-half using mental math, what fraction is useful?

twenty-three halves

twenty-three twenty-firsts

twenty-one forty-seconds

twenty-three eighty-forths

Answer 1

In forty-seconds how would you express 1/2?
That is \[\frac{ 1 }{ 2 }=\frac{ ? }{ 42 }\]