Answer:
N = 5/4 = 1.25
Altogether they eat 1.25 chocolate bar
Explanation:
Dayle and his two brothers each eat 5/12 (five-twelfths) of a chocolate bar;
Three of them ate = 5/12 chocolate bar each
Total for the 3 of them N;
N = 3 × 5/12 = 15/12
N = 5/4 = 1.25
Altogether they eat 1.25 chocolate bar