Ravens

The tale of the Seven Ravens were seven brothers, each of whom was born exactly 2.5 years after the previous one. When the eldest of the brothers was 2-times older than the youngest, mother all curse. How old was seven ravens brothers when their mother cursed?

Correct answer:

k1 (youngest) =  15
k2 =  17.5
k3 =  20
k4 =  22.5
k5 =  25
k6 =  27.5
k7 (oldest) =  30

Step-by-step explanation:

k7k1=62.5+xx=21 2x=62.5+x x=2162.5=15  k1=15
k2=k1+2.5=17.5
k3=k2+2.5=20
k4=k3+2.5=22.5
k5=k4+2.5=25
k6=k5+2.5=27.5
k7=k6+2.5=30



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