Interview Maths Puzzle Numerical Ability Age Problem

sri is as older than vimal as he is younger then karthi . If some of the age of vimal and karthi is 58 years then what is the age of sri

a: 25 years
b: 30 years
c: 45years
d: 29 years

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Interview Other Question
A 200 meter train crosses another train travelling oppsite in direction 15 sec the length of the train is 300 meter and speed of both the trains are equal find the speed of the train

a: 50 kmph
b: 36 kmph
c: 64 kmph
d: 60 kmph an iron ore of 80 tonnes yielded 40 tonnes of metal which had 12 % of impurity what is the % of impurity in ore

a: 10%
b: 6%
c: 20%
d: 16%