Question 902156
Let {{{ x }}} = the number of each type of coin
{{{ 160 = x*( 1 + 5 + 10 ) }}} ( in terms of cents )
{{{ 160 = 16x }}}
{{{ x = 10 }}}
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There are 10 pennies, 10 nickels, 10 dimes
check:
{{{ 160 = 10*( 1 + 5 + 10 ) }}} 
{{{ 160 = 10 + 50 + 100 }}}
{{{ 160 = 160 }}}
OK