40
Yes.
It is: 1/8+1/10 = 9/40
one forth cup plus one eighth cup equals three eights cup.
six-eights
seven eighths
one eighth
One and one-half plus one-tenth equals 1 and six tenths or one and three fifths.
16
4... ^ 3.7/8 + 1/8 = 4.0
One eighth plus one eighth is one fourth.
six tenths or three fifths