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the combined ages of reena ,seena are 44 yrs and reena is twic as old as seena was when reena was half the as old seena will be when seena is three times as old as reena was when reena was 3 times as old as seena. How old is reena???
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- Look it from backward.. Given reena is three times as old as seena, let seena age was X at last point then reena must be 3X.
Reena Seena
3X X
Next statement seena is three times as old as reena
So, seena's age Will be 3*3X=9X. Since seena's age was increased by 8X, reena's age must be increased by 8X. That implies reena's age Will be 11X.
Next
Reena was half as old as seena at that time.
We know seena's age will be 9X at that time.
So, reena must be 4.5X yrs.
Now reena's age changed by 5.5X. So seena's age must be 9X-5.5X=2.5X
Next Reena is twice as old as seena
Now reena must be 5X*2=5X and seena is 2.5X+0.5X=3X
These are the present ages of seena and reena.
=>8X=44
Reena's age 5X=27.5 - 10 years agoHelpfull: Yes(1) No(0)
- megha anamika
3x x
11x 9x
4.5x 2.5x
5x 3x
so total 8x=44 , x=5.5
reena age 27 1/2 seena age 16 1/2.
take a question as revised. - 3 years agoHelpfull: Yes(0) No(0)
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