please help me with this word problem?

Question

You have at least $30 in change in your drawer, consisting of dimes and quarters. Write an inequality that shows the different # of coins in your drawer.

Answer 1

if you wanted it in terms of 1 variable it would be:

0.10x + 2.5x > 30

where x is the # of dimes (2.5 dimes is 1 quarter)

Answer 2

0.10*D + 0.25*Q >= 30.00

where D is the number of dimes and Q is the number of quarters