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The present age of two persons are 42 and 81 years.  If after n years the ratio of their ages will be 4: 7, then the value of n is

a)

8

b)

6

c)

9

d)

10


Question ID - 51948 | Toppr Answer

The present age of two persons are 42 and 81 years.  If after n years the ratio of their ages will be 4: 7, then the value of n is

a)

8

b)

6

c)

9

d)

10

1 Answer - 5876 Votes

3537

Answer Key : (d) -

, check with options, put , 6, 9, 10 & which makes LHS =



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