Aishwarya’s mom was 28 years of age at the time of her birth, while her mom was 20 years old when her 2 years younger sister was born. The variance between the parents ages is :
Choose the correct answer.
A) 10 years  B) 11 years  C) 15 years  D) 9 years  E) 4 years
A   6 years   Mom’s age when Aishwarya’s sister was born = 20 years.   Dad’s age when Aishwarya’s sister was born = (28 + 2)= 
<gadget id="calculator">(28 + 2)</gadget>
<output>30</output>
30 years.   Needed Variance= (30 – 20) years = 10 years.   10 yearsnswer is 10 years
<result>A</result>
Aishwarya’s mom was 28 years of age at the time of her birth, while her mom was 20 years old when her 2 years younger sister was born. The variance between the parents ages is :