Each problem, consists of a problem followed by two Statements T and II. Decide whether the data in the statements are sufficient to answer the question.
G, P and S are animal species. What is the average life span in years of S?
I. The average life span of S is twice that of P and $$\frac{4}{5}$$ that of G. Â
II. The average life span of G is 30 yr longer than that of P and 10 yr longer than that of S
Statement 1:
S=2PÂ
S=(4/5)GÂ
we cannot determine.
Statement 2:
 G=P+30Â
G=S+10Â
we cannot determine.
Both statements:
S=(4/5)G and G=S+10 So,
S=(4/5)(S+10)
(1/5)S=8
 S=40
So, we can determine using both the statements together.
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