15x^6/20y^5 * 6y^2/5x^4 when simplified becomes 9x^2/10y^3
Let Amanda's age = x.
Gregory's age = x + 5.
Since Gregory is 17 years old.
17 = x + 5
x = 17 - 5
x = 12
Amanda is 12 years old.
Answer: 14 7/8
Step-by-step
I put the 4 1/4 into an improper fraction then did keep change flip
(5•4)-8 the answer is 12 because 5 times 4 is 20. Then 20 minus 8 is 12.