Iki musluktan 1.si havuzun 1/3 unu 3 saatte doldurmakta,  2.si ise 3/5 ini 6 saatte bosaltmaktadir. Bu iki musluk beraber acildiklarinda havuzun 1/10 unu kac saatte doldurabilirler ?




Cozum : 1. musluk tamamini 3.3=9 saatte  doldurur
2.musluk tamamını 6.5/3=10 sa bosaltir.  (1/9-1/10).x=1/10  ise x=9 saattir
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