Answer: 7 Q and 45 D
Explanation:
Equations:
Quantity: D + Q = 52 coins
Value:::10D+25Q = 625 cents
Multiply thru Quantity by 10 to get:
10D + 10Q = 520
Subtract that from Value and solve for Q:
15Q = 105
Q = 7 (# of quarters)
Since D+Q = 52, D = 45 (# of dimes)
add them and you get 52.
7 Quarters and 45 Dimes, that 52 coins in total. :]
Hope this helps !!
