SAT Subject Test Mathematics Level 1

percent of 11P:

11 P    +(500%  of  11P)=11P    +5(11P)=    66P

The population at the end of the nineteenth century is 66P. That’s 65P more
than the original population P:

The net increase is 6,500 percent, and the answer is (E).

AVERAGES

Another classic situation with a standard approach is an averages question
like Example 7.

AVERAGE, MEDIAN, AND MODE

Median  =   middle  value   (or average of  two middle  values) Mode    =   most

frequent    value;  if  there   are two numbers that    occur   with    equal

frequency   there   can be  two modes