Mathematics carries the highest weight in AISSEE — 150 of 300 marks in Class 6 and 200 of 400 marks in Class 9 — and it is also a key section of the RMS CET. Practise these 10 MCQs on Simple Interest, then check your answers and step-by-step solutions in the answer key at the end.
Quick facts: AISSEE 2027 will be held on Sunday, 31 January 2027. There is no negative marking, so attempt every question. Online applications are open until 2 December 2026 on exams.nta.nic.in/sainik-school-society.
Practice Questions
Q1. Find the simple interest on ₹2500 at 4% per annum for 4 years.
(A) ₹2900
(B) ₹100
(C) ₹800
(D) ₹400
Q2. What amount will ₹5000 become at 5% simple interest per annum after 3 years?
(A) ₹750
(B) ₹5250
(C) ₹5750
(D) ₹6500
Q3. A sum of ₹5000 earns ₹500 as simple interest in 2 years. What is the rate of interest per annum?
(A) 7%
(B) 10%
(C) 5%
(D) 4%
Q4. In how many years will ₹3000 earn ₹600 as simple interest at 10% per annum?
(A) 3 years
(B) 4 years
(C) 1 year
(D) 2 years
Q5. Find the simple interest on ₹8000 at 8% per annum for 4 years.
(A) ₹10560
(B) ₹2560
(C) ₹640
(D) ₹5120
Q6. What amount will ₹1500 become at 8% simple interest per annum after 3 years?
(A) ₹360
(B) ₹1860
(C) ₹1620
(D) ₹2220
Q7. A sum of ₹4000 earns ₹1600 as simple interest in 4 years. What is the rate of interest per annum?
(A) 12%
(B) 10%
(C) 40%
(D) 9%
Q8. In how many years will ₹1200 earn ₹240 as simple interest at 5% per annum?
(A) 4 years
(B) 5 years
(C) 6 years
(D) 3 years
Q9. Find the simple interest on ₹1000 at 4% per annum for 3 years.
(A) ₹120
(B) ₹1120
(C) ₹40
(D) ₹240
Q10. What amount will ₹3000 become at 8% simple interest per annum after 2 years?
(A) ₹3480
(B) ₹480
(C) ₹3240
(D) ₹3960
Answer Key with Explanations
(D) ₹400 — SI = P×R×T/100 = 2500×4×4/100 = ₹400.
(C) ₹5750 — SI = ₹750; Amount = P + SI = ₹5750.
(C) 5% — R = SI×100/(P×T) = 500×100/(5000×2) = 5%.
(D) 2 years — T = SI×100/(P×R) = 600×100/(3000×10) = 2 years.
(B) ₹2560 — SI = P×R×T/100 = 8000×8×4/100 = ₹2560.
(B) ₹1860 — SI = ₹360; Amount = P + SI = ₹1860.
(B) 10% — R = SI×100/(P×T) = 1600×100/(4000×4) = 10%.
(A) 4 years — T = SI×100/(P×R) = 240×100/(1200×5) = 4 years.
(A) ₹120 — SI = P×R×T/100 = 1000×4×3/100 = ₹120.
(A) ₹3480 — SI = ₹480; Amount = P + SI = ₹3480.
How did you score?
9–10 correct: excellent — move on to a full-length mock test. 6–8: good — revise the explanations of the questions you missed. Below 6: study this topic again from your NCERT book and retry these questions after two days.
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