Question 983551
1.{{{B+G=250}}}
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{{{(2/5)G}}} wore glasses so {{{(3/5)G}}} did not wear glasses.
{{{(1/10)B}}} wore glasses so {{{(9/10)B}}} did not wear glasses.
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{{{(3/5)G=(9/10)B}}}
{{{6G=9B}}}
From eq. 1,
{{{6B+6G=6(250)}}}
Substituting,
{{{6B+9B=1500}}}
{{{15B=1500}}}
{{{B=100}}}
So then,
{{{6G=900}}}
{{{G=150}}}
100 boys, 150 girls total.
{{{(2/5)(150)=60}}} girls wore glasses.
{{{(1/10)(100)=10}}} boys wore glasses.