Percentages · Topic 4 of 6

💰 Income, Expenditure & Savings

1 exam question type, fully solved

Every one of these reduces to one tidy equation. Assume income = 100 and the rest is bookkeeping.

The whole topic in one line

Savings = Income − Expenditure. Know any two and you have the third.

• Watch the word “remaining”: “spends 20% on rent, then 30% of the remaining on food” — the 30% sits on the 80 that is left, not the full income.

• When things change, track only the change: new savings = old savings + extra income − extra expenditure.

• If savings stay the same in rupees, the whole income rise becomes extra expenditure.

💰Income · Expenditure · SavingsSavings = Income − Expenditure

income ₹

spends %

spends 75%

saves 25%

Expenditure = 75% of ₹20000 = ₹15000 Savings = ₹20000 − ₹15000 = ₹5000

Savings = ₹5000

A man spends 70% of his income and saves ₹9,000. His income = 9,000 ÷ 30 × 100 = ₹.

Q1A spends 80% of income and saves ₹6,000. His income is:

Q2Income ₹40,000, expenditure ₹30,000. Savings as a % of income:

Q3Old income ₹20,000 with ₹15,000 spent; income rises 20%, spending rises 10%. New savings:

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Real exam questions — Income, Expenditure & Savings

1 question types · 4 solved examples from real SSC papers

Savings = Income − Expenditure. Assume income = 100 and watch for the word "remaining", which shifts the base.

How to solve this type

Savings = Income − Expenditure, so any two of these three values give the third. Assume Income = 100 (or use the rupee figure given) and turn each percentage line into a simple unit value. Watch for the word "remaining": those percentages apply to what is left, not the original income, so the base shifts. When income and expenditure change by different percentages, don't rebuild everything — track only the change, so New savings = Old savings + extra income − extra expenditure. When the savings amount stays the same, the entire income increase lands on expenditure.

A spends 40% of income on food, 20% on clothing and 10% on rent, and saves ₹9,000. Find the income.

A₹25,000B₹28,000C₹30,000D₹32,000

Ravi spends 20% of his income on rent. Of the remaining, he spends 30% on food and 20% on education, and saves ₹14,400. Find his income.

A₹36,000B₹40,000C₹45,000D₹50,000

A man's income is ₹30,000 and his expenditure is ₹24,000. If income rises by 10% and expenditure by 5%, find the new savings.

A₹7,200B₹7,500C₹7,800D₹8,000

A man saves 20% of his income. His income increases by 40% but he saves the same amount as before. By what percent does his expenditure increase?

A22%B45%C50%D75%