Răspuns :
a/2=b/3=c/5=k
=>a=2k; b=3k; c=5k
a×b×c=240
2k×3k×5k=240
30k³=240=>k³=240÷30=8=2³=>k=2
a=2×2=4
b=3×2=6
c=5×2=10
At cand inmultim se aduna exponentii deci este k la puterea a treia
a/2=b/3=c/5=k
=>a=2k; b=3k; c=5k
a×b×c=240
2k×3k×5k=240
30k³=240=>k³=240÷30=8=2³=>k=2
a=2×2=4
b=3×2=6
c=5×2=10