Reena took a loan of 1400 with simple interest for as many years as the rate of interest. If she paid 224 as interest at the end of the loan period, what was the rate of interest?	Choose the correct choice:
A) 3.6	B) 4	C) 14	D) Cannot be determined	E) None
Explanation: Let rate = R% and time = R years.   Then, (1400 x R x R)/100 = 224   14RÂ² = 224   RÂ² = 16   R = 4.   Answer: Option 4
<result>B</result>
Reena took a loan of 1400 with simple interest for as many years as the rate of interest. If she paid 224 as interest at the end of the loan period, what was the rate of interest?