26.
a sum lent out at 12% per annum compound
interest for two years amounts to rs. 15,660. the
sum lent is
a. rs. 12,000
b. rs. 12,250
c. rs. 12,484
d. rs. 12,880

Option c. Rs. 12,484

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

substitute in the formula above  and solve for P

4 & 3

step-by-step explanation:

factor of 108=2×2×3×3×3=2×2×3^3=the number is 4 because 2 only occurs 2 times and 2×2=4 and factor of 2187=3^3×3^3×3=the number is 3 because 3 onlyvoccur 1 time.