Step-by-step explanation:
SI = PNR/100
SI=SIMPLE INTEREST
P=PRINCIPAL
N=NUMBER OF YEARS
R= RATE OF INTEREST
From the question,
P+SI=1200 , P=1000 & N=2
1000+SI=1200
That is SI=1200–1000
SI=200.
Now put all the above in the formula.
SI=PNR/100
200= (1000*2*R)/100
20000=2000R
Now, R = 20000/2000
R=10
So, At 10% rate of simple interest will Rs.1000/- amount to Rs.1200/- in 2 years.
I hope it's help......
