Question 700620
Let {{{ n }}} = number od nickels
Let {{{ d }}} = number of dimes
given:
{{{ n = d }}}
{{{ 5n + 10d = 165 }}} ( in cents )
By substitution:
{{{ 5n + 10n = 165 }}}
{{{ 15n = 165 }}}
{{{ n = 11 }}}
and, since
{{{ n = d }}}
{{{ d = 11 }}}
She has 11 nickels and 11 dimes