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F-23
A propos de lalimentation
Attention
Toutes les données stockées en mémoire sont perdues si vous retirez les
deux piles en même temps.
Remplacez les piles au moins tous les 2 ans même si vous utilisez peu la
machine.
Veillez à conserver une copie séparée de toutes les données importantes
que vous mettez en mémoire.
Remplacement des piles
1. Appuyez sur OFF pour mettre la machine hors tension.
2. Poussez le couvercle du logement des piles dans le sens indiqué par la
flèche.
480q25t 640.
w 160.
(Bénéfice)
100
w80t 25.
a•80e9| M 720.
50e6} M 300.
20
e3| M 60.
ª M 480.
Quels seront le prix de
vente et le bénéfice si
le prix dachat dun
article est $480 et la
marge bénéficiaire par
rapport au prix de vente
est de 25%?
Si vous avez gagné $80
la semaine dernière et
$100 cette semaine,
quelle est laugmentation
en pourcentage?
80 × 9 = 720
)50× 6 = 300
20 × 3 = 60
480
25


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