Last week dora earned $40 working part time. This week she earned $30. The dicrease is what percent of last wee's earning?
Can somone explain how you get the percent not just show the work . That would be great!
Thanks =]
2006-12-03 07:52:03 · 5 answers · asked by Magic Juice 2 in Science & Mathematics ➔ Mathematics
First, you have to determine the amount of the decrease. Forty dollars minus thirty dollars is ten dollars: this is the amount of the decrease. Then, simply divide the amount of the decrease, $10, by the amount of last week's earnings, $40. This equals .25. Then multiply by 100 to get the percentage. This equals 25%.
2006-12-03 07:57:41 · answer #1 · answered by i love colleen 2 · 0⤊ 0⤋
You can do this 2 different ways..
First..
30/40= 75%, 100 - 75 = 25%
Second..
40-30=10.. 10/40 = 25%
2006-12-03 15:59:12 · answer #2 · answered by immageek 1 · 0⤊ 0⤋
Answer : = ((30-40)/40)*100
= -(1/4)*100
= - 25%
The negative value indicates that its decreasing
Therefore, decrease in Doras's earning compared to last week is 25%
To calculate percentage's u normally do
= ((Final value - Initial Value)/Initial value) *100
Iam not sure though...so please check it
2006-12-03 16:04:04 · answer #3 · answered by chaos_dragon_emperor 1 · 0⤊ 0⤋
OK, the decrease is $10.00. So you have to figure out what percent of $40.00 is $10.00. If you want to know what percent of A is B, the equation to figure it out is (B/A) * 100%. So you take $10.00/$40.00, which is 0.25, and multiply that by 100% to get 25%. The decrease in her wages is 25%. I'd quit if I were her.
2006-12-03 15:58:29 · answer #4 · answered by Amy F 5 · 0⤊ 0⤋
it is 25% less
40 dollar = 100%
30 dollar = X
x=(30x100)/40 = 25
2006-12-03 16:01:44 · answer #5 · answered by Janina H 1 · 0⤊ 0⤋