Question 181058
I'll call the points scored on the tests a, b, c, and d
Points scored on a, b, and c are:
{{{83 + 75 + 91 = 249}}}
The total possible points for the 4 tests are
{{{3*100 + 200 = 500}}}
In order to average {{{80}}}%,
{{{(249 + d)/500 = .8}}}
{{{249 + d = .8*500}}}
{{{d = 400 - 249}}}
{{{d = 151}}}
You must score 151 points out of 200 to get a B