Ok the book gave me the answer to this problem. I need to know how they got to this answer. If you divide 20 into 60 and into 40 you get 3/2 which then =1.5, but why 20 and how do you get 1.5 out of 3/2? PLease help me and give me step by step.
Thank you lots
Bridgette
2007-11-04 03:00:13 · 4 answers · asked by Bridgette H 1 in Science & Mathematics ➔ Mathematics
20 is the largest common factor in 60 and 40. You could also just divide 60 by 40 on your calculator, or realize that both are multiples of ten and just divide 6 by 4, or, having dropped the zeroes, realize 6 and 4 are both even numbers and divide each by 2 to 3/2.
It's just division.
The rest of that is just that it's often possible to do the division in your head if you realize some common factors in the two numbers.
2007-11-04 03:09:28 · answer #1 · answered by Bob G 6 · 0⤊ 0⤋
20 is the greatest common factor 0f 20 and 60.
40 = 20 *2 and 60 = 20 *3.
So you get 3/2 when you reduce the fraction to its lowest terms.
Now 3/2 means 3 divided by 2
So divide 3.0 by 2 and you get 1.5
Or you can say 3 divided by 2 = 1 plus remainder 1.
Put the remainder over the divisor (which is 2) and you get 1/2. So 3/2 = 1 1/2 = 1.5
2007-11-04 11:12:32 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
Current = Voltage over the resistance, so 60 volts divided by 40 ohms = 1.5 amperes.
Your question is kinda confusing,i do electrical technology so i have an idea of what your talking about,but the way you set the question i cant understand it.Please rephase and holla.
3 divided by 2= 1.5
2007-11-04 11:21:41 · answer #3 · answered by TAMMY 3 · 0⤊ 0⤋
60/40 is the same as 3/2
which is why the answer is 1.5
2007-11-04 11:06:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋