Question

please please please in question ka answer jaldi de do

Answer 1

Hi,

Here is your answer.........

1.Rate=100×I/pa×t

=100×700/5000×2

=70000/10000....here we cancel the 0s of both sides making it

7/1 which is 7% of rate....

2.Given P = 2700, R = 4%, Amount = 2700+2700 = 5400.

We know that SI = PRT/100

We know that SI = A - P.

A - P = PRT/100

5400-2700 = 2700 *4 * T/100

2700 = 108T

T = 2700/108

   = 25 years.

3.Principal = Rs. 2700

So, the Simple Interest if it doubles will be = Rs. 2700

S.I. = (P*R*T)/100

2700 = (2700*4*T)/100

10800T = 2700*100

T = 270000/10800

T = 25 

So, in 25 years Rs. 2700 will be doubled at the rate of 4 % simple interest.

4.Interest=1000-800=200

rate=100×i/p×t

=100×200/800×1

=20000/800....here we can cancel 2 0s of 800 from 20000

making it....200/8=25

Means the rate is 25%