Of the total amount of available water on the earth, what percent is usable?

James is playing his favorite game at the arcade. after playing the game 33 times, he has 88 tokens remaining. he initially had 2020 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

What is the area of the shaded sector?