Directions (set of 5 questions):
Each question below is followed by two statements A and B. You are to determine whether the data giving in the statement is sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answers.
What is the rate percent per annum on an amount of Rs. 6000 deposited in Bank?
I. The simple interest for four year is Rs. 3600.
II. The difference between the simple interest and compound interest is Rs. 894.0375.
If the statement A alone is sufficient to answer the question, but the statement B alone is not sufficient.
If the statement B alone is sufficient to answer the question, but the statement A alone is not sufficient.
If both statements A and B together are needed to answer the question.
Either the statement A alone or statement B alone is sufficient to answer the question.
If you cannot get the answer from the statement A and B together, but need even more data.
Solution
Simple Interest for 4 years Rs. 3600.
Principal = 6000
Simple Interest for 1 year $=\dfrac{3600}{4}=900$
Rate of interest $=\dfrac{SI\times 100}{Principle \times time}=\dfrac{900\times 100}{6000\times 1}=15\%$
Statement A alone give the data to find the rate.