Answer:
Hammer cost 300 yen and screw cost 5 yen
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