If in Exercise 6B-2 cash on hand is $29, prepare the entry to replenish the petty cash

Question:

If in Exercise 6B-2 cash on hand is $29, prepare the entry to replenish the petty cash on March 31.
In Exercise 6B-2
March 1 A $104 petty cash fund is established.
31 At the end of the month, $21 cash plus the following paid vouchers exist: donations expense, $21; postage expense, $18; office supplies expense, $29; miscellaneous expense, $15.