Question

Trei copii Tudor, Dan si Mihai au impreuna 110 lei. Dan are jumatate din cat are Tudor iar Mihai are o treime din cat are Tudor. Ce suma are fiecare?

Answer 1

/Răspuns:

Tudor +Dan+Mihai=110lei

110:3= 36, 6 ( cat are un copil)

36 , 6 =Tudor⇒

36 ,6   : 2 = 18 ,3     (cat are  Dan  )

18 ori 1/3 =36 lei mihai

Answer 2

t-Tudor

d-Dan

m-Mihai

t+d+m=110

d=t÷2=>t=d×2

m=t÷3=>t=m×3

----------------------------,---

t,d,m=?

---------------------------,,---

t+t/2+t/3=110

t×6+(t/2×3)+(t/3)×2=110×6

6t+3t+2t=660

11t=660

t=660÷11

t=60

d=t÷2

d=60÷2

d=30

m=t÷3

m=60÷3

m=20

V:60+30+20=110

V:90+20=110