Simple interest on a certain amount is 916 of the principal. If the n…

Question

Simple interest on a certain amount is 916 of the principal. If the numbers representing the rate of interest in percent and time in years be equal, then time, for which the principal is lent out, is -

Accepted Answer

Option D. 71/2 years. Answer & Solution Answer: Option D Solution: & Let\, sum = x. & Then, & S .I . = 9 16x & Let rate = R\% \, and & time = R\, years & ( x × R × R100 ) = 9x16 & R^2 = 90016 & R = 304 = 71/2 & Hence, & time = 71/2 years