SSC CGL Simple Interest Practice Test 2026 — Free Chapter Wise Questions

Simple Interest Tests — Pick a Level and Start

Tap a level to see every test in it. Level 1 is set at real SSC CGL difficulty — start there the day you finish the concept. Level 2 is pitched above the exam, to push accuracy under pressure.

Simple interest is the friendliest chapter in commercial arithmetic: one formula, four letters, and every year earning exactly the same as every other. That last point is the whole idea. The interest is always charged on the original sum, never on the interest already earned, which is what separates it from compound interest and what makes every year’s earning identical.

The marks are lost almost entirely on two things: a time that was never converted into years, and the difference between the interest and the amount. A period of 8 months is two thirds of a year, not 8; a sum that becomes three times itself has earned interest equal to twice the sum, not three times. Each test puts twenty-five simple interest questions in front of you in one sitting, which is what makes the recurring shapes visible — the same doubling questions, the same equal-interest splits, the same installment setups SSC has been recycling for years.

How Many Simple Interest Questions Are Asked in SSC CGL?

Simple interest is a near-certain question in Tier II and a frequent one in Tier I. It is almost always set alongside compound interest, and the two share every letter of the formula.

Counts vary by shift. Questions that compare simple with compound interest are counted under compound interest above, but they cannot be solved without this chapter.

What You Will Practice in the Simple Interest Chapter

Core topics

• The formula in all four directions — finding the interest, the principal, the rate or the time
• The amount, and working back from an amount to the sum that produced it
• Time given in months, in days, as a mixed fraction of a year, or between two dates
• Rates quoted per month, per quarter or per half-year, and paise per rupee per month
• Sums that double, treble or reach any stated multiple, and the time or rate that does it
• The interest as a fraction of the sum, or of the amount — and the difference between the two
• Two sums earning equal interest, and the ratio that condition forces
• A sum split between two rates, with the total interest, the split or one rate unknown
• Rates that change part way through the term, in two or three slabs
• Rates that step up or down by a fixed amount each year
• Interchanging the two parts of a split, and what that does to the interest
• Part repayment of a loan, and the settlement payment that clears it
• Equal annual installments, paid at the start or the end of each year
• Hire purchase — a down payment, a deferred balance, and the cash price
• Deposits made every year, half-year or month, and the maturity value
• Date-to-date interest, counting days and handling a leap year

Formulas worth memorising

The multiple row is the one to hold on to: to become n times itself, a sum must earn interest equal to (n − 1) times itself, because the amount already contains the sum once over. That single correction settles a large share of the chapter’s questions.

The three mistakes that cost the most marks

• Leaving the time in months or days. The rate is per annum, so the time must be in years before anything is multiplied. Eight months is 8/12 of a year; seventy-three days is 73/365. Using 8 or 73 makes the answer twelve or three hundred times too large.
• Reading a multiple as the interest. A sum that becomes 4 times itself has earned 3 times itself in interest, not 4. The sum was there from the start and is counted once inside the amount.
• Working a rate on the amount instead of the principal. The amount already carries the interest inside it. Dividing by the amount gives a smaller rate that answers a different question.

Solved Examples — SSC CGL Simple Interest

How the Simple Interest Chapter Tests Work

• 25 questions per test, with a full question palette — answered, skipped, marked for review, not visited.
• Optional 15-minute timer — with the clock to build exam speed, without it while you are still learning the chapter.
• Marking: +2 correct, −0.5 wrong, 0 unattempted — the same scheme as the real paper.
• Solutions, shortcut tricks and concept notes open after you submit, question by question.
• English and हिंदी, chosen at the start of every test.
• Free with a TrickySSC account — sign in once with Google or your mobile number, and every test is open to you.

How to Prepare Simple Interest for SSC CGL

1. Do percentage first. Every rate in this chapter is a percentage, and a student who is fluent with percentages usually finds simple interest takes an afternoon.
2. Convert the time before you write anything else. Months over 12, days over 365, and a rate quoted per month or per quarter multiplied up to a year. Most wrong answers in this chapter are correct arithmetic on an unconverted period.
3. Learn to work in shares of the sum. Writing SI/P = RT/100 lets you answer any question that gives a fraction or a ratio instead of rupees — and a good third of the chapter does exactly that.
4. Fix the multiple rule in your head. To become n times, the interest must be (n − 1) times the sum. Doubling needs interest equal to the sum, trebling twice the sum, and so on. It takes ten seconds and it recurs constantly.
5. Do Level 1 untimed, the same day you finish the theory. It is set at real SSC CGL difficulty; the aim is picking the right form of the formula, not speed.
6. Repeat Level 1 with the 15-minute clock on, then move to Level 2. A Tier I simple interest question that takes more than about forty seconds usually means the formula was rearranged the long way round.
7. Then do compound interest. The two chapters use the same letters and are regularly compared in the same question, so they belong together.
8. Verify against a real paper. Once Level 1 is consistent under the clock, attempt a previous year paper and then a full mock test under locked sectional timing.

Related SSC CGL Maths Chapters

These chapters share their formulas with simple interest. Practising them as a block is the fastest route through commercial arithmetic.

All SSC CGL Chapter Wise Tests

Every chapter below has its own free Level 1 and Level 2 tests with full solutions.

SSC CGL Simple Interest — Frequently Asked Questions

More Free SSC CGL Practice