(6 x 100) + (6 x 50) + (6 x 4) = 600 + 300 + 24 = 924
2/6 gallons per friend
Math:
3 friends divided by 6 gallons = 2 gallons per friend
Answer: their are 50 hip hop CDs
Step-by-step explanation: 10% of 250 CDs is 25CDs, so 20 % is 50 CDs and 70% is 175 CDs.