Question

6 robineti umplu un bazin in 4ore si 20min.In cat timp umplu același bazin 15 robineti cu același debit?​

Answer 1

4 ore 20 minute= 4×60+20=260 min.

$\\6 \text{ robinete............260 min}\\15 \text{ robinete.............x min}\\\\ x=\frac{260×6}{15}=\frac{1560}{15}=\tt{104~~min}$