Question 1018856
john has four more nickels than dimes in his pocket, for a total of $1.24. write an equation that could be used to determine the number of dimes, d, in his pocket. (you do not have to solve the equation.) 
--------
n = d + 4
5n + 10d = 124 cents
--------------------------------
Substitute for "n" and solve for "d"::
5(4-d) + 10d = 124
---------------
Cheers,
Stan H.
---------