Question

12. The respective ratio between the present ages of L. M and N is 4: 5: 7. If the average of their present ages is 32 years, then what was the sum of the ages of L and N together 4 years ago? (1) 56 years (2).58 years (3) 66 years (4) 60 years (5) None of these​

Answer 1

4x+5x+7x=32

16x=32

x=32/16

x=2

L = 4*2+4=12

N = 7*2+4=18

sum = 12+18 = 30

ans = none of these

Answer 2

None of these

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