Question 366301
You went off track. To get the amount of
money she had in dimes, you need {{{10d}}}
The amount of money in pennies is just {{{p}}}
So you can write
{{{10d + p = 54}}}
To show more pennies than dimes, you have to write
{{{p = 6d}}}
Now do a substitution:
{{{10d + 6d = 54}}}
{{{16d = 54}}}
{{{d}}} = ?
I only get a whole number of dimes if {{{16d = 64}}}
Are you sure she didn't have 64 cents?