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Numerele a si b sunt invers proportionale u 0,25 si 0,2.Determinati numerele a si b stiind ca 3a+2b-6=60

Răspuns :

Teoebi
0,25=25/100=1/4
0,2=2/10=1/5

1/4a - 1/5b ⇒ a = 4b/5
3a+2b-6=60
12b+10b-30=300
22b=330
b=15
a=12

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