Question

Suma a 3nr. este 100.Primul este de 3ori mai mic decat al doilea si de 6ori mai mic decat al treilea Care sunt nr.?

Answer 1

a+b+c=100
a=b:3=>b=3a
a=c:6 =>c=6a
a,bc=?
a+3a+6a=100
10a=100
a=100:10
a=10
b=3a=10x3
b=30
c=6a=6x10
c=60

Answer 2

a+b+c=100
b=ax3
c=bx6
a |----|
(un segment )
b |----|----|----| }100
(3segmente )
c |----|----|----|----|----|----| (6 segmente) 100 :10( segmente)=10(a)
10 x 3 = 30 (b)
10 x 6 = 60 (c)