Question

Find the Principal when simple interest - 780, Rate 10% pa. Time = 5 years​

Answer 1

Answer:

15.6

Step-by-step explanation:

sI=p x r x t /100

78 = p * 10*5/100

78=p*5= 78/5= 15.6

Answer 2

Answer:

15 percentage

Step-by-step explanation:

P×R×T/100 =780-p

PR=50(780-p)...1

interest for 7 year =rs.(1230-p)

7pr =100/7(1230-p)...2

From (1)and (2)

50(780-p)=100/7(1230-p)

780-p/1230-p=2/7

5460-7p=2460-2p

5p=3000

p=rs.600

substituting value of p in (1) ,we get

600r =50(780-600)

600=50×180

r=50×180/600=15percentage

I hope this is helpful for you