miss Edward bought 11.92 gallons of gasoline at 1.49 1/9 per gallon. Estimate how much she paid for the gasoline

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.