633, problems
1-12 inclusive; at 71% and at 41% in 13–24 inclusive;
at 51 % and at 5% in problems 25–38 inclusive; and at 10 % and
4% in problems 39-52 inclusive.
1-12 inclusive; at 71% and at 41% in 13–24 inclusive;
at 51 % and at 5% in problems 25–38 inclusive; and at 10 % and
4% in problems 39-52 inclusive.
Tuyl - 1911 - Complete business arithmetic
