The difference will be 10.00-9.74=0.26 .
That is 26 cents.
There are coins: 1,5,10 and 25 cents.
We list all the possible options.
1+25=26
1+10+10+5=26
1+10+5+5+5=26
1+5+5+5+5+5=26
And variant with more penny:
26 times by penny
11 times by penny +10+5=2611 times by penny +5+5+5=2621 times by penny +5=2616 times by penny +10=2616 times by penny +5+5=266 times by penny +5+5+5+5=266 times by penny +5+5+10=266 times by penny +10+10=26
So it's 13 of variants