# Word problems and the Khan Academy

A word problem from the Khan Academy

Last year, I was asked by my American colleagues to give my assessment of mathematical material on the Khan Academy website. Among other things I looked for the so-called “word problems” and clicked on a link leading to what was called there an “average word problems” but happened to be a “word problem about averages”. It appears that the problem there changed since last year. I reproduce here the old one, it is more of interest for discussion of “word problems”.

Gulnar has an average score of $$87$$ after $$6$$ tests. What does Gulnar need to get on the next test to finish with an average of $$78$$ on all $$7$$ tests?