Julius has 4 blue marbles if 1/3 of julius' marbles are blue how many marbles does julius have

What are the soultion(s) to the quadratic equation 40- x^2=0

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

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?