Question

answer this question please with solution​

Answer 1

Answer:

b=5 ,a=7

Step-by-step explanation:

The general compound interest formula is: $A=P(1+\frac{R}{100} )^{N}$

Here, A = Amount,  

P = Principal

R= rate of interest

N= number of years  

But in compound interest half yearly, the rate of interest will be halved, R/2 & time will be doubled, 2N

So comparing to

$A=1200(1+\frac{b}{100} )^{a}$

b=10/2= 5%  

and a= 2*31/2=7 years  

so . value of b is 5 and a is 7 .