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A+b+c+d=1464
B=60%din a
C=80%din b
C=75%din c

Răspuns :

Renatemambouko
a+b+c+d=1464
b=60%din a =60*a/100=3a/5      
c=80%din b =80b/100=4b/5= 4*(3a/5)/5=12a/25
d=75%din c=75c/100=3c/4=3*(12a/25)/4=36a/100
a+3a/5+12a/25+36a/100=1464
100a+60a+48a+36a=146400
244a=146400
a=600
b=3*600/5=360
c=12*600/25=288
d=36*600/100=216

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