12. Bharathi borrows an amount of 12500 al 12% per annum for 3 years at a simple inters
and Madhuri borrows the same amount for the same time period at 10% per annum
compounded annually. Who pays more interest and by how much?

Step-by-step explanation

For bharathi

Principal,P =Rs 12500

Simple interest Rate,R = 12%

Time period,n = 3 years.

Simple Interest, SI at 12% for 3 years =

(12500×12×3)/100

= Rs 4500

For Madhuri

Principal,P =Rs 12500

Compound interest Rate,R = 10% p.a.

Time period,n = 3 years.

Amount when interest is compounded annually

C.i=A-P

C.i=(1+R/100)^3-p

=12500((1+10/100)^3-12500

=12500(11/10)^3-12500

=[(125×11×11×11)/10×10×10]-12500

=16637.50-12500

=4137.50

Bharathi pays more interest and Rs (4500 - 4137.50) = Rs 362.50 more.

7

step-by-step explanation:

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source