Question

un camion circula trei ore cu viteza de 52,5km/h si apoi inca 2,5 ore cu viteza de 55,75 km/h.CARE ESTE DISTANTA PARCUSA DE CAMION?
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Answer 1

3 * 52,5 = 157,5 km
2,5 * 55,75 = 139,375 km
157,5 + 139,375 = 296,875 km este distanta

Answer 2

$pasul\ 1\ :\ scriem\ formula. \\ v= \frac{d}{t} , unde: \\ v= viteza \\ d= deplasare \\ t=timp. \\ pasul\ 2\ :\ efectuam: \\ v_1= 52,5\frac{km}{h} \\ t_1=3h \\ =\ \textgreater \ d_1= 52,5\frac{km}{h} *3h \\ d_1=157,5 km \\ v_2=55,75 \frac{km}{h} \\ t_2= 2,5h \\ =\ \textgreater \ d_2= 55,75\frac{km}{h} *2.5h \\ d_2=139,375km \\ d_{drum}= d_1+d_2 \\ d_{drum}= 157,5km+139,375km \\ \boxed {d_{drum}= 296,875km} \\-Mayu-$