Question 421092
Let {{{m}}} = number of men
Let {{{w}}} = number of women
given:
{{{m/w = 2/7}}}
{{{m + w = 36}}}
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{{{ m = (2/7)*w}}}
{{{(2/7)*w + w = 36}}}
{{{ (9/7)*w = 36 }}}
{{{w = (7/9)*36 }}}
{{{w = 28 }}}
There are 28 women in the class
check answer:
{{{m + w = 36 }}}
{{{ m  + 28 = 36 }}}
{{{ m = 8 }}}
{{{8/28 = 2/7}}}
{{{7*8 = 28*2 }}}
{{{56 = 56 }}}
OK