If you have 427,657 people that speak Japenese in 1990 and it increased by 25% since 1980, how many people spoke Japenese in 1980? Please show me the steps. Thanks!
2006-09-28 15:11:41 · 6 answers · asked by Christine 3 in Education & Reference ➔ Primary & Secondary Education
Let's say that x people spoke Japanese then...
Then now we'd have the same x people with an additional 0.25*x more people. So in total 1x + 0.25x = 1.25x
And 1.25x is also 427, 657
SO 1.25 x = 427, 657
Divide by 1.25
x = 342125.6 Ask your teacher who the .6 of a person was! Eeps!
2006-09-28 15:21:12 · answer #1 · answered by J G 4 · 1⤊ 0⤋
Just multiply 427,657 by 1.25
You know it increased by 25%, so the new number is going to be 125% of the old number.
Crap... another math blunder... ok, it was 25% LESS, so you want to multiply it by 0.75!!!
2006-09-28 15:21:34 · answer #2 · answered by Paul 7 · 0⤊ 0⤋
Let the 1980 population = x
X *1.25 = 427,657
X= 427,657/1.25
X = 342,125.6
2006-09-28 15:21:48 · answer #3 · answered by cyrenaica 6 · 0⤊ 0⤋
25/100*427657
=106914.25
add this to actual amt
106914.25 +427657
= 534571.25
2006-09-28 15:41:49 · answer #4 · answered by S A 3 · 0⤊ 0⤋
427,657 : 4 = 106,914.25
427,657 - 106,914.25 = 320,742.75
2006-09-28 15:35:17 · answer #5 · answered by Garo 2 · 0⤊ 0⤋
427657*.75?
2006-09-28 15:14:58 · answer #6 · answered by David M 2 · 0⤊ 0⤋