Cost percent off
5.50 75%
25 50%
170 85%
159.99 70%
12.65 90%
739 20%
What is the answer for all of these after the percentage off?
2007-12-24 04:14:55 · 6 answers · asked by C C 1 in Science & Mathematics ➔ Mathematics
DOnt know
2007-12-24 04:21:20 · answer #1 · answered by BOND 3 · 0⤊ 1⤋
1.
5.5 x (1-75%)
= 5.5 x 25/100
= 5.5 x 1/4
= 5.5/4
= 1.375
2.
25 x (1-50%)
= 25 x 50/100
= 25 x 1/2
= 25/2
= 12.5
3.
170 x (1-85%)
= 170 x 15/100
= 170 x 3/20
= 510/20
= 25.5
4.
159.99 x (1-70%)
= 159.99 x 30/100
= 4799.7/100
= 47.997
5.
12.65 x (1-90%)
= 12.65 x 10/100
= 12.65 x 1/10
= 12.65/10
= 1.265
6.
739 x (1-20%)
= 739 x 80/100
= 739 x 4/5
= 2956/5
= 591.2
2007-12-24 04:29:35 · answer #2 · answered by An ESL Learner 7 · 0⤊ 1⤋
You got your fishes for the day from above.
But it would be better to just teach you how to fish.
Let O be the original price
& let us make P the percentage discount
D will be the discount price.
Then D = O * (100-P)/100
So for the first question
O=5.50
P=75
D=?
D=5.50 * (100-75)/100
D=5.50 * (25)/100
D=5.50 * 0.25
D=1.375
The reason being the original price is said to be 100% or the whole part. In this question we are saying we need to take away 75% or 3/4 of the original price. Thus if we subtract 75% from 100% or the whole price, then we will be able to find what we are looking for, or the remaining 25% or 1/4.
Now you can open up your own retail store.
2007-12-27 05:39:18 · answer #3 · answered by Math Man 2 · 0⤊ 0⤋
5.50 75%=1.375
25 50%=12.5
170 85%=25.5
159.99 70%=47.997
12.65 90%=1.265
739 20%=591.2
2007-12-24 04:19:48 · answer #4 · answered by UNIQUE 3 · 0⤊ 1⤋
you should do your own homework :P
all the best
2007-12-28 03:31:31 · answer #5 · answered by kamal d 3 · 0⤊ 0⤋
1.375
12.50
25.50
47.997
1.265
591.20
~~~
2007-12-24 04:20:30 · answer #6 · answered by A Little Sarcasm Helps 5 · 0⤊ 1⤋