Which problem solving strategy would be best to solve this problem?

Avelina earned half as much money as Gus. If Gus earned $125.00, how much money did Avelina earn?

What is the value of the expression below? (81^2)^1/8

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this

Don't know how to find x given these segment lengths