Question

afla trei numere invers proportionale cu 2, 3 si 4, daca produsul lor este 72

Answer 1

P=72

a=2k

b=3k

c=4k

2k*3k*4k =72

6k*4k=72

24k=72

k=72/24 =3

k=3

a=2*3=6.a=6

b=3*3 =9.....a=9

c=4*3=12......a=12

Answer 2

a/1/2=b/1/3=c/1/4=k

a=k/2

b=k/3

c=k/4

a×b×c=72

k/2×k/3×k/4=72

k³/24=72

k³=24×72

k³=1728

k=12

a=12/2

a=6

b=12/3

b=4

c=12/4

c=3