Question

22. 10 year's simple interest of 400 is 280. Then what will be the rate of interest.
(a) 7%
(b) 12% (c) 3% (d) 5%​

Answer 1

Opt a

Step-by-step explanation:

Interest = pnr/100

280= 400.10.r/100

280.100/4000=r

7=r