Question 1040199: Present age of vanilla is four times the present age of her sister mala. After 10years, twice vani's age will be four times males age. Find their present ages.
Answer by ikleyn(52884)   (Show Source):
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Present age of vanilla is four times the present age of her sister mala.
After 10 years, twice vani's age will be four times males age. Find their present ages.
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V = 4A (1) (Present age . . . )
2(V+10) = 4(A+10) (2) (After 10 years . . . )
Divide (2) by 2 (both sides) and substitute V from (1) into (2). You will get
4A + 10 = 2(A+10),
4A + 10 = 2A + 20,
2A = 20 - 10,
2A = 10,
A = 5.
Hence, V = 4A = 4*5 = 20.
Answer. A is 5, V is 20.
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