Question

Cinci Robinete cu acelasi debit care curg simultan umplu un bazin de apa in 12 ore. A)In cat timp vor umple bazinul de apa 12 robinete
B) Cate robinete cu acelasi debit vor umple bazinu in 6 ore.

Answer 1

Răspuns:

Explicaț5ie pas cu pas:

5 robinete..............12 ore

1 robinet.................5*12 = 60 ore

12 robinete................60 : 12 = 5 ore

___________

5 robinete............................12 ore

5*12 = 60 robinete................1 ora

60 : 6 = 10 robinete..............1*6 = 6 ore

Answer 2

Răspuns:

5 robinete..........12 ore

12 robinete............x

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x=5×12:12=5 ore

marimi invers proportionale

5 robinete..........12 ore

x...........................6 ore

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x=5×12:6=10 robinete