Today Jamal is twice as old as Sanwar and Sanwar is 4 years younger than Faruk. If all of them are alive four years from today, which of the following must be true? I. Jamal is twice as old as Sanwar II. Sanwar is 4 years younger than Faruk III. Jamal is older than Faruk
A. I only
B. II only
C. III only
D. I and II
E. II and III
Explanation: Faruk = x; Sanwar = x-4; Jamal = 2(x-4) = 2x-8. 4 years later: Faruk = x+4; Sanwar = x; Jamal = 2x-4. so, only II and III correct
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