The question
"My grandfather says a cinema ticket cost ₹5. Same cinema, same seat. Why does it cost ₹250 now?"
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Home reading
The money did not change. The prices did.
A ₹5 note from 1975 is still a ₹5 note. What changed is what ₹5 buys.
This slow rise in prices is inflation, and it is not caused by shopkeepers being greedy. It happens because, over time, there is more money in an economy chasing goods that did not increase as fast. When more rupees pursue the same bag of rice, the bag costs more rupees.
Open the live economy block. India's inflation reading right now is beside the other figures. That single number tells you how fast money is losing its buying power this year.
What this does to a gullak
Here is the part that catches people. Put ₹1,000 in a gullak. Leave it for ten years. Take it out. You still have exactly ₹1,000.
But if prices rose about 6% a year over that decade, the things ₹1,000 used to buy now cost about ₹1,790.
`` your money after 10 years ₹1,000 what you need to buy the same things ₹1,790 what you actually lost about 44% of your buying power ``
Nobody stole anything. The number never fell. Money that does not grow is money that shrinks, because the world around it got more expensive.
This is the single most important sentence in Class 8, and it is why saving alone is not enough.
The saving ladder
So money should be kept somewhere that grows. Different places grow at different speeds and carry different risks — this is a ladder, and each rung is a trade.
| Where | Roughly what it grows at | Risk | Reach it in |
|---|---|---|---|
| Gullak at home | 0% | it can be stolen or spent | instantly |
| Savings account | low | very safe | instantly |
| Fixed deposit | higher | very safe | on a fixed date |
| Government schemes | higher still | very safe | after years |
| Company shares | higher over long periods, and can fall | can lose value | any working day |
Two rules run down that ladder, and they are worth stating plainly:
Higher growth comes with higher risk. Always. Anybody offering the top of the ladder with the safety of the bottom is describing something that does not exist.
Money you need soon belongs low on the ladder. Next month's school fee should not be anywhere it can fall. Money you will not touch for fifteen years can sit higher.
You do not have to choose one rung. Most families use several at once, matching each to when they will need that money.
Borrowing, and the EMI
Sometimes a family needs something before it has saved for it — a scooter, a house, a medical bill. It borrows, and repays in monthly instalments: the EMI.
An EMI has two parts inside it, and this is what most people never look at:
- Principal — repaying what you borrowed
- Interest — the price of having borrowed it
Only the first part reduces your debt. The second is the cost of time.
What borrowing actually costs
Borrow ₹1,00,000 for 5 years at 12% a year:
`` EMI about ₹2,224 a month paid over 60 months about ₹1,33,000 you borrowed ₹1,00,000 the loan cost you about ₹33,000 ``
Thirty-three thousand rupees bought you nothing except the ability to have the item five years earlier. Sometimes that is worth it — a scooter that gets someone to work earns more than it costs. Sometimes it is not — a phone does not.
The question is never "can I afford the EMI". It is "is this thing worth the extra ₹33,000". Almost nobody asks the second one.
Where it turns dangerous
Ordinary loans charge 9–15% a year. Some app loans and credit cards charge 36% or more, and they usually advertise it as "just 3% a month", which sounds small and is the same thing.
Remember the rule of 72 from chapter 2. At 36%, an unpaid amount doubles in about two years. Compounding does not care which side you are on.
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Worked example
Two families each need a ₹40,000 fridge.
The Sharmas save ₹3,500 a month for a year. They pay ₹42,000 in total — ₹40,000 for the fridge, and they earned about ₹2,000 in interest while saving. They waited twelve months.
The Vermas buy it today on a 12-month EMI at 18%:
`` EMI about ₹3,668 a month total paid about ₹44,000 extra cost about ₹4,000 ``
The difference between the two families is about ₹6,000 — the interest one earned and the other paid. What the Vermas bought with that ₹6,000 was twelve months of having a fridge.
Neither family is wrong. But only one of them knows the number.
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⚠️ The common mistake
"Keeping money at home is the safest thing to do."
It feels safest because the number never falls. But inflation reduces what that number buys, every single year, silently and without a receipt.
A gullak is safe from theft. It is not safe from time. Both are real risks, and only one of them announces itself.
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Check yourself
- Prices rise about 6% a year. Roughly what will a ₹100 item cost in 12 years? (Use the
rule of 72.)
- Why is money in a gullak said to lose value, when the number written on it never
changes?
- Give one reason to keep money in a savings account rather than shares, and one reason to
do the opposite. Say what changes the answer.
- A ₹1,00,000 loan at 12% over 5 years is repaid as about ₹1,33,000. What did the extra
₹33,000 buy?
- A lender advertises "only 3% per month". State the yearly rate, and use the rule of 72 to
say how fast an unpaid amount doubles.