start with the maximum 25c coins and work down
9x25 + 1x10 = 235
7x25 + 6x10 = 235
and so on, replacing 2 25c coins with 5 10c coins at each step.
Anthony has P2.35 in 10 centavo and 25-centavo coins. Find all the possibilities for the number of 10 centavo coins that he has.
1 answer