What is 5 x 4 - 16 + 5 x 10 - 10 = ?

A16 ounce bottle of orange juice says it contains 200 milligrams of vitamin c which is 250% uh just read the paper it explains it better

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

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81