Question 1025862
Let {{{ n }}} = number of questions on the test
She got right: {{{ n - 6 }}} questions
Her score was:
{{{ ( n - 6 ) / n = .76 }}}
{{{ n - 6 = .76n }}}
{{{ n - .76n = 6 }}}
{{{ .24n = 6 }}}
{{{ n = 25 }}}
There were 25 questions on the test
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check:
{{{ ( n - 6 ) / n = .76 }}}
{{{ ( 25 - 6 ) / 25 = .76 }}}
{{{ 19/25 = .76 }}}
{{{ 19 = .76*25 }}}
{{{ 19 = 19 }}}
OK