Discussion

Question:

A person invested a certain sum of money at a certain rate of interest, and twice the amount at a rate which was 4percentage points more than the percentage at which the first amount was invested. If on the average, the interest rate works out to be 19% at what rate was the first amount invested?

Explanation:

$P \times \frac{r}{100} + 2 P \times \frac{(r + 4)}{100} = 3 P \times \frac{19}{100}$

⇒ r = $16 \frac{1}{3}$ %

Hence, option (a).

» Your doubt will be displayed only after approval.

Doubts

Feedback