Can somebody me with this it a little hard

its D. i know for sure. if you need anything else let me know.

We notice that all the options add up to 18 bills, so we cant eliminate any from the amount of bills. Therefore, we must find the options that adds to 50.

Because we have 5 dollar bills, the amount of ones must be a multiple of five. The only option that has a multiple of 5 for the one dollar bills is (d).

We can verify that option d is correct.