Quantitative Aptitude SSC MTS, SSC quantitative aptitude Free access now

Simple Interest for SSC MTS | Concepts & Practice | SSC MTS Quantitative Aptitude

Build Simple Interest accuracy for SSC MTS with concept clarity, key relations, exam-speed methods and approved practice.

Tailored for SSC MTS Quantitative Aptitude. 1 active practice questions. Related topics: Percentage, Profit and Loss, Compound Interest.

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Understand the fastest pattern for this topic before you attempt full MCQs.

Avoid common traps

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Solve faster in exam

Apply one practical method before attempting MCQs and cut down hesitation.

Summary Formula Tricks Mistakes Solved Example Practice FAQ

Simple Interest revision for SSC MTS: understand the base rule, apply the correct formula or relation, check common traps, then practise with approved questions.

Simple Interest is calculated on the original principal for every time period, so the interest per equal period remains constant when rate and principal do not change.

SSC MTS focus: Solve the core method first, then use the approved practice questions on this page to build exam-speed accuracy.

Simple Interest revision rule: concept → formula/relation → one worked example → timed practice → error review.

Core concept
Key formula/relation
Common trap
Approved practice

SI = PRT/100
Amount = P + SI

If interest for one year is known, multiply it by the required number of years when principal and rate remain unchanged.

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Read the exact requirement before choosing a shortcut.
Keep units, signs and percentage bases consistent.
Use the final few seconds to verify direction and magnitude.

Using a memorised shortcut without checking its condition.
Skipping unit or base conversion.
Doing long arithmetic before identifying the underlying relation.

Practice example: In a Simple Interest practice set, a student answers 18 questions correctly out of 24. What percentage is correct?

Solution: Correct percentage = 18/24 x 100 = 75%.

In a Simple Interest practice set, a student answers 18 questions correctly out of 24. What percentage is correct?

Learn the shortcut first

Shortcut before you solve

Simple Interest is direct once principal, rate and time are identified.

Faster solving steps

Use this 4-step method before solving to keep your thinking fast and repeatable.

Step 1 Identify relation

Spot the pattern, relationship, or core idea first.

Step 2 Apply same pattern

Use the same rule instead of re-solving from scratch.

Step 3 Eliminate wrong options

Remove confusing choices before comparing the last few.

Step 4 Confirm final answer

Pick the option that matches the shortcut most cleanly.

Practice Questions

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Now apply the trick on real questions

Use the shortcut above before solving these questions

Use SI = P x R x T / 100 after confirming that interest is calculated only on the original principal.

Tip: Simple interest adds the same interest amount for each equal time period when rate and principal stay constant.

Step 1

Use SI = P x R x T / 100.

Step 2

SI = 1000 x 10 x 2 / 100 = Rs. 200.

Rule

Simple interest is calculated on the original principal throughout the period.

3-second trick

Identify P, R and T, then substitute directly into PRT/100.

Trap to avoid

Do not compound previous interest into the principal.

Correct answer

Rs. 200

Thinking path

Principal = 1000.
Rate = 10% per annum.
Time = 2 years.
Interest = 200.

Final answer: Rs. 200

Why this is fast: The direct PRT/100 formula gives SI in one line.

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Q1 Easy

In a Simple Interest practice set, a student answers 18 questions correctly out of 24. What percentage is correct?

Concept type: Simple interest on principal Shortcut used: Use SI = P x R x T / 100 after confirming that interest is calculated only on the original principal. Quick hint: Simple interest adds the same interest amount for each equal time period when rate and principal stay constant.

Quick idea: Correct percentage = 18/24 x 100 = 75%.

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