Question

suppose in the early 1900s the levels of CO2 in the atmosphere was only 64% of the levels of CO2 today. what percentage more is the level of CO2 today compared to the levels of CO2 in the early 1900s?

Answer 1

@perl

Answer 2

there is a typo in your questions,

Answer 3

i have a hard time answering when i see typos in questions

Answer 4

suppose in the early 1900s the levels of CO2 in the atmosphere was on only 64% of the levels of CO2 today.
was on?

Answer 5

i fixed it /.\

Answer 6

i think its just 100 - 64 % or 36% more

Answer 7

i think its just (100 - 64) % or 36% more

Answer 8

the question is a bit ambiguous, q

Answer 9

Yes, ambiguous. Another take.

1900 64
Today 100

Percent Increase: (100-64)/64 = 0.5625

Answer 10

can you explain to me why you did that?

Answer 11

1) Where did it start?
2) How much did it change?
3) Calculate percent increase.

Answer 12

I did that as my second approach

Answer 13

the directions say that the CO2 level in 1900 was 64% of today. So we can assume, without loss of generality, that there are 100 pounds of CO2 in the atmosphere today. That means in 1900 there were 64 pounds of CO2 in the atmosphere.

Answer 14

Now , what is the increase from 64 pounds to 100 pounds, in terms of percents?

Answer 15

you can solve the equation
64 ( 1 + r ) = 100 , where r is the rate of increase in decimal

Answer 16

r = 100 /64 - 1 . this will give you a decimal, which you can convert to a percent

Answer 17

r = .5625 , which is 56.25% increase.