In which year was Chris born? (1) Chriss brother, Kevin, who is 5

Question

In which year was Chris born?

(1) Chris’s brother, Kevin, who is 5 years older than Chris, was born in 1990.
(2) In 2007, Kevin turned 17 years old.

This is a  Data Sufficiency Butler Question

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Ayeka · Answer

Chris birth year= ? 
(1) Kevin birth year =1990 and he is 5 years older than Chris 
Chris birth year =1990-5=1,985 
Sufficient

(2) in 2007, Kevin turned 17 but here is no info about Chris 
Insufficient

A

Souradeep17 · Answer

We need to find out Year of Chris's birth

Option 1:.
Kevin is 5 yrs older than him and was born in 1990 . This point to the fact that Chris was born in 1995. Its sufficient

Option 2: kevin turned 17 in 2017. that means he was born in 1990 . No other information from this about Chris. Hence not sufficient

Answer should be option A

Dereno · Answer

Need to find the year, when Chris was born.

Statement 1:

(1) Chris’s brother, Kevin, who is 5 years older than Chris, was born in 1990.

Kevin is 5 years older than Chris.

Kevin was born in 1990.

so, Chris is born 5 yrs later = 1995.

Hence,  Sufficient

Statement 2:

(2) In 2007, Kevin turned 17 years old.

If Kevin turned 17 yrs on 2007. Then, he must have been born on 1990.

But No information about Chris. Hence,  Insufficient

Option A

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