Toldos: Yaakov and Esav and Avraham

Avraham lived to be 175 years old [Bereishis 25:7]. Yitzchak was born to Avraham when Avraham was 100 years old [Bereishis 21:5]. Yaakov (Jacob) and Eisav were born to Yitzchak when Yitzchak was 60 years old [Bereishis 25:26).

Question:  How old were Yaakov and Eisav when Avraham died?

Answer: 175 – 100 = 75

75 – 60 = 15

They were 15 years old.