Question

Find the sum that amounts to Rs79860 in 3years at 10%

Answer 1

Answer:   sum= Rs   61430.77

Step-by-step explanation:

Let the sum be Rs x.

Simple interest in 3 years = amount -sum  = 79860-x                     ....................(1)

$Simple \; interest =(\frac{sum\times rate \times Time}{100})\\\\Simple \;Interest =(\frac{x\times 10 \times 3}{100}) ..........................................(2)$

so

from Equation 1) and 2)

0.3x   = 79860-x    

x=79860/1.3  =  Rs   61430.77