Question
How old would have Yellow been 6 years ago?
Answer: Option C
:
C
Let y1,y2......be the indefinite years. Let "t" be the year blue was born, "j" green and m yellow. Let y be the current year.
y−8−m=12(y2−j)=1−y3−ty3−m=5(y+2−t)...............(1)
y+10−t=2(y1−j)y1−m=9(y1−t)............(2)
t+1−m=3+y4−ty4−j=3(y5−6−m)
y5−j=12(y6−t)y6−m=10+y7−my7−j=13(y8−t)y8−m=3(j−m)
t=y−3j=y−8m=y−15
Therefore, green = 8 years
blue= 3 years
yellow = 15 years
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:
C
Let y1,y2......be the indefinite years. Let "t" be the year blue was born, "j" green and m yellow. Let y be the current year.
y−8−m=12(y2−j)=1−y3−ty3−m=5(y+2−t)...............(1)
y+10−t=2(y1−j)y1−m=9(y1−t)............(2)
t+1−m=3+y4−ty4−j=3(y5−6−m)
y5−j=12(y6−t)y6−m=10+y7−my7−j=13(y8−t)y8−m=3(j−m)
t=y−3j=y−8m=y−15
Therefore, green = 8 years
blue= 3 years
yellow = 15 years
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