Răspuns:
Explicație pas cu pas:
cat0, rest0...0
cat1, rest4 ...23*1+4=27....................................
cat1,2, rest 8...23*2+8=46+8=54
cat 3, ret 12..........................81
cat4, rest16..........................108
cat5, rest20..........................135 care e si cel mai mare
la cat 6, nu putem avea rest24
suma
27+54+81+144=27(1+2+3+4+5)=27*15=270+135=405...rotunjita, 410