Question

Can anyone help me with this question?​

Answer 1

Answer:

(i) 7.14 %

(II) 5.35 %

Step-by-step explanation:

(i) Principal: 196 Rupee, Amount: 225 Rupee, and time: 2 years

Use the formula a=p(1+r)^t, where, where A: is the amount over the time of interest, P is the original interest, t is the number of years and  r is the annual interest rate.

To do this:

225 = 196(1+r)^2

225/196 = (1+r)^2

1 + r = √225/196

1+r = 15/14

r = 15-14/14 = 1/14

r = 1/4 x 100 = 7.14 %

(II) Same thing again, with a TWIST!

Amount (in this case) = Principal +Compound interest = 3136 + 345 = 3481 Rupee

3481 = 3136(1+r)^2

3481/3136 = (1+r)^2

√3481/3136 = 1+r

√3481/3136 - 1 = r

r = 0.0535

r = 5.35 % (converted)

Hope this helps! Please mark as brainiest if so.