The table is
\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
\
First Number x \ | \
Second Number \ | \
Product P \ |
\
10 \ | \
| \
|
\
20 \ | \
| \
|
\
\
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
\
First Number x \ | \
Second Number \ | \
Product P \ |
\
10 \ | \
| \
|
\
20 \ | \
| \
|
\
30 \ | \
| \
|
\
40 \ | \
| \
|
\
50 \ | \
| \
|
\
60 \ | \
| \
|
\
70 \ | \
| \
|
\
80 \ | \
| \
|
\
90 \ | \
| \
|
\
100 \ | \
| \
|
The maximum is attained near x = 50 and 60.