Question

heyyaa plz help me with this question.
I WILL MARK AS BRAINLIEST

Answer 1

Hey there

Here is your solution...

Formula for finding Amount

A= P( 1+ R/100)^n

A= Amount in ₹

P= Principal in ₹

R= rate of interest in %

n= time period in years

Given:

A= ₹68921, P= ₹64000, n= years

A= P( 1+ R/100)^n

68921 = 64000 (1+ R/100)³

68921/64000 = (1+R/100)³

(41/40)³ = (1+R/100)³

[68921= 41³, 64000= 40³]

41/40 = (1+R/100)

41/40 - 1= R/100

(41-40)/40 = R/100

1/40 = R/100

40R= 100

R= 100/40= 10/4= 5/2= 2.5%

R= 2.5%

Rate percent = 2.5 percent

Hope this will help you

Mark as brainiest

Answer 2

since CI=A-P
68921=A-64000
A=68921+64000
=132921
A=P (1+R/100)Power n
132921=64000 (1+R/100)3