Book Online Demo

Check Your IQ

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

The population of a town increases annually by $25 %$ if the preset population is $1$ crore, then what was the difference between the population three years ago and two years ago?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

25, 00, 000

crore

12, 80, 000

crore

15, 60, 000

crore

None of these

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Given that population increases annually by

25 %

.
Let population

3

years ago be

x

\Rightarrow

Population two years ago was

\frac{125}{100} x

.
Population last year was

\frac{125 \times 125}{10000} x

.
Population this year is,

\frac{125 \times 125 \times 125}{1000000} x = 10000000

\Rightarrow

x = 5120000

So, the population 3 years ago was 5120000.
Difference between population three years ago and two years ago,

25 %

x

\Rightarrow

\frac{25}{100} \times 5120000

\Rightarrow

25 \times 51200

\Rightarrow

1280000

So, the difference between the population three years ago and two years ago is 1280000 crore.
Hence, the correct option is 2.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

The population of a town increases annually by 25% if the preset population is 1crore, then what was the difference between the population three years ago and two years ago?

Detailed Solution

Best Courses for You

Get Expert Academic Guidance – Connect with a Counselor Today!

The population of a town increases annually by $25 %$ if the preset population is $1$ crore, then what was the difference between the population three years ago and two years ago?