Question 344403
Let {{{x}}}=number of items that she sold for a nickel
Then {{{12 - x}}} = number of items that she sold for a dime
given:
{{{5x + 10*(12 - x) = 95}}}
{{{5x + 120 - 10x = 95}}}
{{{-5x = -25}}}
{{{x = 5}}}
{{{12 - x = 12 - 5}}}
{{{12- 5 = 7}}}
She sold 5 items for a nickel and 7 items for a dime
check:
{{{5x + 10*(12 - x) = 95}}}
{{{5*5 + 10*(12 - 5) = 95}}}
{{{25 + 10*7 = 95}}}
{{{25 + 70 = 95}}}
{{{95 = 95}}}
OK