Question
A sum of money trebles itself in 15 years 6 months . In how many years would it double itself ?
Answer: Option B
Was this answer helpful ?
Let sum = `x` , Then , S.I. = `2x` , Time = `15 1/2` years = `31/2` years
`:.` Rate = `((100 xx 2x)/(x xx 31/2))`% = `400/31`%
Now , sum = `x` S.I. = `x` Rate = `400/31`%
`:.` Time = `(100 xx x)/(x xx 400/31)` = ` 31/4` years = 7 years 9 months.
Was this answer helpful ?
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution