Ayesha has 55 coins in her purse. The coins consist of only dimes and quarters. The total value of the coins is only $10.00. How many each type of coin does Ayesha have in her purse?
a) 30 dimes, 25 quarters
b) 25 dimes, 30 quarters
c) 20 dimes, 35 quarters
d) 35 dimes, 20 quarters