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Reem
@Reem
May 2019
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Bonjour
Ex. 1 svp
Merci d'avance
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trudelmichel
Verified answer
Bonjour,
temps mis le matin
T=D/V TM= 3/4 h
vitesse aprés midi
augmentation 4 x 50%= (4x50)/100= 200/100=2
Vitesse aprés midi=4+2=6km/h
Temps mis l'aprés midi
T AM= 3/6=1/2 h
temps Total= 3/4+1/2= 3/4+2/4=5/4h
vitesse moyenne= 6 /(5/4)= (6x4)/5=24/5=4.8 km/H
Vitesse matin =4
vitesse moyenne=4.8
4.8-4=0.8
pourcentage d'augmentation=(0.8/4)x 100=0.2x100=20%
1 votes
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Verified answer
Bonjour,temps mis le matin
T=D/V TM= 3/4 h
vitesse aprés midi
augmentation 4 x 50%= (4x50)/100= 200/100=2
Vitesse aprés midi=4+2=6km/h
Temps mis l'aprés midi
T AM= 3/6=1/2 h
temps Total= 3/4+1/2= 3/4+2/4=5/4h
vitesse moyenne= 6 /(5/4)= (6x4)/5=24/5=4.8 km/H
Vitesse matin =4
vitesse moyenne=4.8
4.8-4=0.8
pourcentage d'augmentation=(0.8/4)x 100=0.2x100=20%