Răspuns :
a)
intial cele trei persoane au depus la banca: 1650-10:100x1650=1650-165=1485 lei
b)
a=prima persoana b=a doua persoana c=a treia persoana
a:2=b:3=c:5=k
a:2=k⇒a=2k
b:3=k⇒b=3k
c:5=k⇒c=5k
a+b+c=2k+3k+5k=10k
10k=1485
k=1485:10
k=148,5
a=148,5x2=297
b=148,5x3=445,5
c=148,5x5=742,5
c)
aduni suma fiecarei persoane cu 10% din ea
297+10:100x297=297+29,7=326,7
445,5+10:100x445,5=445,5+44,55=490,05
742,5+10:100x742,5=742,5+74,25=816,75
d)
326,7+490,05=816,75
816,75=816,75
deci 100% pentru ca e la fel
intial cele trei persoane au depus la banca: 1650-10:100x1650=1650-165=1485 lei
b)
a=prima persoana b=a doua persoana c=a treia persoana
a:2=b:3=c:5=k
a:2=k⇒a=2k
b:3=k⇒b=3k
c:5=k⇒c=5k
a+b+c=2k+3k+5k=10k
10k=1485
k=1485:10
k=148,5
a=148,5x2=297
b=148,5x3=445,5
c=148,5x5=742,5
c)
aduni suma fiecarei persoane cu 10% din ea
297+10:100x297=297+29,7=326,7
445,5+10:100x445,5=445,5+44,55=490,05
742,5+10:100x742,5=742,5+74,25=816,75
d)
326,7+490,05=816,75
816,75=816,75
deci 100% pentru ca e la fel