ANGELESJAIMIEROSEIN ANGELESJAIMIEROSEIN Math Answered . P-RXB R = P/B B = P/R III. Find the rate, base, or percentage. Use these formulas. Write your answer on the blank.11) What is 20% of 160? 12) 25% of 96 is 13) 50 is 8% of what number? 14) 20% of what number is 15?15) 5 is what percent of 25?