Respuesta :

Answer:

Hammer  cost 300 yen and screw cost 5 yen

Step-by-step explanation:

From given statement can be obtain

Hammer = h     &     screw = s

   Eq 1       4h + 10s = 1250 y

 Eq  2        2h + 40s = 800 y

 Multipyle eq 2 with 2

      2 (2h + 40s = 800) =2(800)

     ⇒  4h + 80s  = 1600      eq 3

Now minus eq 1 from eq 3

        4h + 80s = 1600y

        4h + 10s = 1250

         O  + 70s = 350y

             s = 350/70

     S = 5

To find hammer price put value of s in eq 1

     4h + 10s = 1250

     4 h = 1250 - 50 = 1200

   h = 1200/4 = 300