What is 8.4÷711.9. it is dividing decimals

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?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.