Question

58,va rog mult ajutor

Answer 1

Răspuns:

Explicație pas cu pas:

Vom calcula Timpul in care autobuzul parcurge traseul fara a se opri la statii.

Distanta=Viteza·Timp, deci Timp=Distanta:Viteza=

$=20\frac{1}{4} :45=\frac{81}{4}*\frac{1}{45}=\frac{9}{20} h\\\frac{7}{10} -\frac{9}{20}=\frac{14}{20} - \frac{9}{20}=\frac{5}{20}=\frac{1}{4}h\\\frac{1}{4}:10=\frac{1}{4}*\frac{1}{10}=\frac{1}{40}h=\frac{1}{40}*60min =\frac{60}{40}min=\frac{3}{2}min=1\frac{1}{2}min.$