The pasteurization temperature of milk by the High Temperature Short Time (HTST process is 161 Fahrenheit. What is this temperature in Centigrade?

How do you work the problem and show all the work on paper.

You're obviously wanting us to do your homework. You'll have to start thinking.

What do you want to do? Convert fahrenheit into centigrades? How do you do that? Is there a formula? Where can you find the formula? What did you do to try to solve the problem (except for posting on forum(s))?

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Originally Posted by CroCivic91

You're obviously wanting us to do your homework. You'll have to start thinking.

What do you want to do? Convert fahrenheit into centigrades? How do you do that? Is there a formula? Where can you find the formula? What did you do to try to solve the problem (except for posting on forum(s))?

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Think... water will boil at 212F (100c)... frezzzz at 32f(oc)

Simple answer 71.6°C

If it is your homework, you are only cheating yourself in the long run!

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Originally Posted by colbtech

Simple answer 71.6°C

If it is your homework, you are only cheating yourself in the long run!

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think harder next time... C= (F-32)/1.8

Hi, Littledan,
Taking Geometry? This question must be a review of some Algebra.
Here is the equation.

C = 5/9 (F - 32)

Remember how to solve an equation?
Substitute the Fahrenheit degrees of 161.
C = 5/9 (161 -32)
C = 5/9 (129)
then, multiply by 5 and divide by 9
C = 71.7 degrees, rounded off.
If you don't know how to solve an equation, then please ask someone at school or somewhere, to show you the basics. You have to be able to solve equations to be successful with Geometry.

I memorized those conversion formulas when I was a kid, and long forgot them.

However, I can derive them if I need them.

I know two points for values of Centigrade and Fahrenheit, freezing and boiling:

Freezing: C=0, F=32
Boiling: C=100, F=212.

I am assuming the relationship between Centigrade and Fahrenheit is a straight line relationship.

Given any two points (X1,Y1) and (X2,Y2), the formula for the straight line that connects those two points is:

Y - Y1 = (X - X1)*[(Y2 - Y1)/(X2 - X1)].

I can then use the formula for the straight line with the two points whose value I know, and find the formula relating Centigrade and Fahrenheit.

And if I can do it, so can you!

36% of 789 = 0.36 * 789 = 284.04

CaptainForest 36% of 789 = 0.36 * 789 = 284.04

How to achieve this without a calculator.

1).36*789
2) (.4*789) - (.04*789)
3) (315.6) - (31.56)
4) 284.04

rolcam

Quote:

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Originally Posted by ROLCAM

CaptainForest 36% of 789 = 0.36 * 789 = 284.04

How to achieve this without a calculator.

1).36*789
2) (.4*789) - (.04*789)
3) (315.6) - (31.56)
4) 284.04

rolcam

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Why on Earth would you do it that way if you didn't have a calculator?

A simpler way to do it without a calculator is:

789
x.36
04734
23670
284.04

Much simpler way if you don't have a calculator. And I don't see how your way is simple without a calculator.

My way is done all mentally.
Your way , you must use pen and paper.
My idea comes from an old book called Speed Mathematics.
It teaches you to use your brain.
The aim is to be able to multiply any figure by a two figured number.
So you look at 36 and you translate it to +40 and -4.
I thought it would be helpful.

Try some of these menally:-

26*24
89*81
77*73
45*45

If you managed them, please explain your process of thought.

Rolcam.