Question

a principal of rs.800 amount to rs. 1120in 2 years the rate of simple interest is :​

Answer 1

Answer:

20%

Step-by-step explanation:

simple interest = amount - principal

SI=PRT/100

R= SI * 100/PT

R= (320*100)/(800*2)

=32000/1600 = 20%

so the rate is 20%

Answer 2

S.I = P×R×T/100.....(i)

• 1120-800 = S.I

= 320

From (i),

R= S.I ×100/P×T

= 320×100/ 800×2

= 20%