A few days ago
Anonymous

can you help me with my math…Ya i know its summer my schoolstarts early?

The country’s population incresed 20% from 1980 to 1990. If the country’s population in 1980 was 340,000 what was it in 1990

Top 10 Answers
A few days ago
Anonymous

Favorite Answer

Multiply the country’s population by 1.2.

The reason you multiply it by 1.2 is the “1” is the 100% of the people that already live there. You add on the .2 because the country’s population increased by 20%.

It saves a step at the end when you would have had to add 68000 to 340,000.

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A few days ago
navy_bison
The country’s population incresed 20% from 1980 to 1990. If the country’s population in 1980 was 340,000 what was it in 1990

Pop in 1980 was 340,000

Increase in 10 years was 20%

Let pop in 1990 = x = (1.2)(original pop)

340,000(1.2) = 408,000

To determine the percentage in decimal form divide the given by 100 (move decimal two spaces left)

Add 1 to the answer to represent the total original population of 340,000/340,000

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A few days ago
wayner122
There is a 20% increase, so first figure out what 20% of the population is in 1980: 340,000(0.20) = 68,000. Now just add that to the price in 1980:

340,000 + 68,000 = 408,000 people in 1990

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A few days ago
old lady
To do this, multiply the 1980 population of 340,000 by 120.

That covers the 100% that existed in 1980 and teh extra 20% that existed in 1990

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A few days ago
Anonymous
multilpy the population in 1990 (340,000) by .2 , and then add that number to 340,000. the result will be your answer.
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A few days ago
toastersmith
340,000 plus 20%
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A few days ago
judy f
Divide 340,000 by 5. 20% is equal to l/5. Then add that

amount to 340,000 and you will have your figure.

Another way, ten percent is 34,000. Twenty percent is

68,000. So add 340,000 to 68,000 and you have the figure.

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A few days ago
NMprof
What country is this, anyway? It has a smaller population than Albuquerque.
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A few days ago
Laura H
multiply 340,000 by 1.20 to get your answer (408,000)
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A few days ago
minnesota sweetheart
use a proportion!!!

awww… that sucks school already starts 4 u!!!

i start in about 3 weeks!

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