1.Chandrika's mother was 4 times her age 10 years ago.She will be twice as old as chandrika from now.find present age of candida's mother. Pls answer this question with working 2.The smallest of three consecutive number is added to twice the largest.The result obtained is 7 less than 4 times the middle number.find the numbers. Answer them with working

Answers (1)

1. Let Chandrika's mothers age now = x,
               10 yrs ago her age= x-10
               10 yr hence her age= x+10
According to the question,       10 yr ago  Chandrika's age = (x-10)/4 yr
                                                  10 yr hence her age = (x+10)/2
Then we have (x-10)/4 + 20 = (x+10)/2
          Solving    x -10 + 80 = 2x +20
                                      x = 50
Present age of Chandrika's mother is 50 yrs.

2. Let the consecutive no.s be x-1, x and x+1
ATQ  (x-1) + 2(x+1) = 4x -7
     ⇒    x-1 + 2x +2 = 4x -7
     ⇒    x = 8
Then we have the numbers  8-1, 8, 8+1 i.e 7,8,9

 

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