BAT LLC had an opening balance of RO 400 in the petty cash fund. During the month the receipts were RO 125 petrol, 55 office stationery, RO135 staff welfare and 65 travelling and there was RO 15 left in the petty cash box. If the petty cash fund is raised to RO 500 per month then how much is the amount required to be refill?

a.

RO 385

b.

RO 485

c.

RO 480

d.

RO 380