Question

Principal = 400, Rate = 10 paise per rupee per annum, Time = 6 months [Hint: Rate = 10 paise per rupee per annum = (10 x 100) paise per 100 rupees p.a. 6 1 = 10 per 100 rupee p.a. = 10% p.a., Time = 6 months = year = year] 12 2​

Answer 1

Answer:

We have,

p=400

r=10% p.a.

n=6mon.

si=p*r*n(n+1)/100*2*12

=400*10*6(6+1)/100*2*12

=105

Answer 2

Answer:

Step-by-step explanation:

Principal = 400

Time = 6/12 = 1/2 or 0.5

Rate = 10 paise for 1 rupee

           4000 paise for 400 rupees = 40 rupees for 400 rupees

           40/400 * 100 = 10%                                                          ( * = multiply)

Simple interest = 400 * 0.5 * 10 / 100

                          = 2000/100 = 20