The document contains a series of simple interest problems with questions and multiple-choice options. It includes calculations for various scenarios, such as earning interest on different sums over specified time periods and at different interest rates. Additionally, there are explanations and answers provided for each question.

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2. Chapter : Simple Interest
TEST - 1

3. 1. At the rate of 8 1/2% p.a. simple interest, a sum of
Rs. 4800 will earn how much interest in 2 years 3
months ?
A.Rs. 796 B.Rs. 816 C.Rs. 918 D.Rs. 956
Ans : Option A
Explanation:

4. 2. What will be the simple interest earned on an
amount of Rs. 16,800 in 9 months at the rate of
6 1/4% p.a. ?
A. Rs. 787.50 B.Rs. 812.50 C.Rs. 860 D.Rs. 887.50
Ans: Option A
Explanation:
Total sale for 5 months = Rs. (6435 + 6927 + 6855 + 7230 +
6562) = Rs. 34009. Required sale = Rs. [ (6500 x 6) – 34009 ]
= Rs. (39000 – 34009) = Rs. 4991.

5. 3. The simple interest on Rs. 1820 from March 9,
2003 to May 21, 2003 at 7 1/2% rate will be
A.Rs. 22.50 B.Rs. 27.30 C.Rs. 28.80 D.Rs. 29
Ans : Option D
Explanation:
Average of 20 numbers = 0. Sum of 20 numbers (0 x 20) =
0. It is quite possible that 19 of these numbers may be
positive and if their sum is a then 20th number is (-a).

6. 4.A person borrows Rs. 5000 for 2 years at 4% p.a.
simple interest. He immediately lends it to
another person at 6 1/4% p.a. for 2 years. Find
his gain in the transaction per year.
A.Rs. 112.50 B.Rs. 125 C.Rs. 150 D.Rs. 167.50
Ans : Option C
Explanation:
Total weight increased = (8 x 2.5) kg = 20 kg. Weight of
new person = (65 + 20) kg = 85 kg.

7. 5. How much time will it take for an amount of Rs.
450 to yield Rs. 81 as interest at 4.5% per annum
of simple interest ?
A.3.5 years B.4 years C.4.5 years D.5 years
Ans : Option A
Explanation :
Let the average age of the whole team by x years. 11x –
(26 + 29) = 9(x -1) 11x – 9x = 46 2x = 46 x = 23. So, average
age of the team is 23 years.

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