Jack, sally and joe all work in a bookstore. jack sold 126 books. joe sold 1/2 as many books as many books as jack, and sally solly sold 1/3 as many books as joe. how many books did sally sell?

the number of books that Sally sold is 21

Step-by-step explanation:

Jack sold 126 books. Joe sold 1/2 as many books as many books as jack. This means that the number of books that Joe sold would be

1/2 × 126 = 63

Sally sold 1/3 as many books as joe. This means that the number of books that Sally sold would be

1/3 × 63 = 21 books.

597

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.