i need to know 3/10 as a percentage and 7/20 as a percentage and 4/25 as a percentage and 2/5 as a percentage please help me
2006-09-19 08:13:53 · 20 answers · asked by Anonymous in Education & Reference ➔ Homework Help
An easy way to do percenatages is make the number on the bottom of the fraction 100.
Take your first example, 3/10
To make the bottom number 100, you need to multiply it by 10
Whatever you do to the bottom you must do to the top.
So you get 30 / 100
X / 100 just means X %. X can be any number
So your answer is 30%
Same for you second example, multiply top and bottom by 5 so you get 35 / 100.
That means the answer is 35 %
Try it yourself, its easier than it looks
(Ans: 30%, 35%, 16%, 40%)
2006-09-21 03:10:21 · answer #1 · answered by amandagwen 2 · 0⤊ 0⤋
3/10s is 100% divided by 10 = 10
10 times 3 = 30
3/10s is 30%
7/20s is 100% divided by 20 = 5
5 times 7 = 35
7/20s is 35%
4/25s is 100% divided by 25 = 4
4 times 4 = 16
4/25s is 16%
2/5s is 100% divided by 5 = 20
20 times 2 = 40
2/5s is 40%
2006-09-23 10:50:34 · answer #2 · answered by Amysu 1 · 0⤊ 0⤋
3/10 = 30%
7/20 = 35%
4/25 = 16%
2/5 = 40%
2006-09-20 07:01:27 · answer #3 · answered by Tropic-of-Cancer 5 · 0⤊ 0⤋
What you need to do is count how many times the /# fits into 100 and then times the #/ by that many times. That is then the percentage.
eg 3/10
100 devided by 10 = 10
10 x 3 = 30
=30%
100 devided by 20 = 5
5 x 7 = 35
= 35%
4/25
100 divided by 25 = 4
4 x 4 = 16
= 16%
2/5
100 divided by 5 = 20
2 X 20 = 40
= 40%
hope this helps
2006-09-19 15:19:23 · answer #4 · answered by ccskitten 3 · 0⤊ 0⤋
The answers are:
3/10=30%
7/20=35%
4/20=16%
2/5=40%
What you do is take your fratction and multiply it by 100/1. You should be able to divide it down.
7 x 100
-- -----
20 1
The 20 will divide into 100 5 times. You then multiply the 7 by the 5.
Hope that helps!
2006-09-20 12:10:16 · answer #5 · answered by nettlesie 2 · 0⤊ 0⤋
30, 35, & 16
3/10 as percentage: 3 divided by 10 & multiply by 100 = 30
2006-09-21 13:12:02 · answer #6 · answered by L J 1 · 0⤊ 0⤋
3/10 is 30 percent
7/20 id 35 percent
4/25 is 16 percent
2/5 is 40 percent
2006-09-19 15:17:35 · answer #7 · answered by Jane S 4 · 0⤊ 0⤋
rite wot u do, so u no how to do it, u divide 3/10, which is 0.3, then u x that by 100 which is 30, so thats 30%. then do 7/20, which is 0.35, x 100 = 35%, then 4/25=0.16x 100=16%
and finally 2/5=0.4 x 100 = 40%
2006-09-20 13:10:14 · answer #8 · answered by Anonymous · 0⤊ 0⤋
the answers are: 30%, 35%, 16% and 40% appropriately.
in details the first solution is: 3/10 = 3*10/10*10 = 30/100 = 30%
2006-09-19 15:33:39 · answer #9 · answered by Georgi P 1 · 0⤊ 0⤋
multiply each by 100 and the result is in percentage.
30%
35%
16%
40%
2006-09-19 15:18:56 · answer #10 · answered by anami 3 · 0⤊ 0⤋