Donald builds desks. Every 8 desks require a pack of 48 screws.

If Donald builds 32 desks, how many screws will he need?

What you want to do is 48/8 to find out how many screws needed for one desk.

48/8=6 ... So 6 screws for each desk

Then multiple 6*32 to find out how many screws he will need altogether.

6*32=192 screws

So Donald will need 192 screws for 32 desks

32/8 = 4

so Donald uses the pack of 48 screws a total of 4 times to build 32 desk

48 x 4 = 192

so he used 192 screws total