Answer:
Step-by-step explanation:
We know that for principal amount P , time period T and rate of interest , simple interest is given by .
Here ,
To find : simple interest rate i.e.,
On putting values of in formula , we get
Now we need to round off the answer to the nearest tenth .
So, simple interest rate is % = =
1. b, 2. d, 3. c, 4. a.