Between 1980 and 1990 a workers weekly wage increased by 140% to $180. Calculate the weekly wage in 1980?
Thanks so much in advance!
2007-04-18 19:42:03 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Answer: $75
Working:
(at 1980) 100% - $____
240% - $180
Please note at this point that it's 240% not 140% because it said it increased BY 140%. Not increased to 140% So add the increase of 140% to the original 100%
Cross multiply and you'll get :
100%x $180/240% = $75
2007-04-18 19:58:07 · answer #1 · answered by Asia 4 · 1⤊ 0⤋
Rate = %/100
Rate corresponding to 140 % is 1.4
w = 1980 wage
Between 1980 and 1990 a workers weekly wage increased by 140% to $180
1.4w = 180
w = 180/1.4 ~ 128.57
2007-04-19 02:49:01 · answer #2 · answered by kindricko 7 · 0⤊ 0⤋
if it increased to $180 by 140%
if you use 1.4 / 180 = 1 / a
where a = weekly wage in 1980
solve for a
1.4 a = 180
a = 128.57
2007-04-19 02:48:34 · answer #3 · answered by SlamDUNK 4 · 0⤊ 0⤋
Divide $180 by 140% or 1.4 to get: $128.57
good luck!
2007-04-19 02:48:32 · answer #4 · answered by birdwoman1 4 · 0⤊ 0⤋
x = weekly wage in 1980.
1.40x = $180.
x = $180/1.4 = $90/.7 = $128.57.......
2007-04-19 02:45:41 · answer #5 · answered by Mark 6 · 0⤊ 1⤋
$128
2007-04-19 02:47:43 · answer #6 · answered by Anonymous · 0⤊ 0⤋
140x/100 = $180
x = $180*100/140
2007-04-19 02:47:20 · answer #7 · answered by Helmut 7 · 0⤊ 1⤋
x = wage in 1980
Increase = 1.4 x
S0 2.4x = 180
x = $75
2007-04-19 02:47:39 · answer #8 · answered by ironduke8159 7 · 1⤊ 0⤋
100---->140
x ---->180
-----------------------....x=18000/140~128
10years=520 weeks
180-128=52 wage
------------------------------
ratio =52/520 =1/10=10/100 wage/week
2007-04-19 03:16:26 · answer #9 · answered by Tuncay U 6 · 0⤊ 0⤋