Donuts are p dollars per pack.Every three packs a customer buys, one pack will be free.Max brought home 4x packs of donuts, how much did he pay for the donuts?

Question

Algebra 1 Word problems

Answer 1

The price of 1 pack of donuts is:   (1 pk)*$p/pk = $p

The price of 3 packs of donuts is:  (3 pk)*$p/pk  = $3p,  but that is also

the price of 4 packs of donuts because one pack is free.

 

Now, what is the price of 4x packs of donuts?  It is the price of (4)(x) packs of donuts.

  That is ($3p)(x)

      or $3px