Question about Texas Instruments TI-84 Plus Calculator

# Two kinds of coffee are blended to produce a mixture of 25 kilograms worth Php 52 a kilogram. The costs of the two kinds of coffee are Php 40 and Php 56 a kilogram. Find how many kilograms of each kind are blended?

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You have to solve system of equations 56x+40y=52(x+y) and x+y=25. See captured image

Finally, you need 18.75 kg coffee with price 56 and 6.25 kg coffee with price 40 to produce mixture 25 kg with price 52!

Posted on Jan 05, 2013

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Posted on Jan 02, 2017

SOURCE: tI-83 plus

Posted on Sep 16, 2008

Posted on Mar 06, 2011

I am sorry. I tried Google translate and although I get a blurry idea of what you want to calculate, I am not sure, because a few words did not translate meaningfully.

If you have 19 tonnes of potatoes one year and 15 tonnes the next year and you wanted to find the average production rate over a two year period,

1. you calculate the total production over two years (34 tonnes)
2. then divide it by 2 to get 17 tonnes per year.
3. In kilograms, 17 tonnes per year, is equal to 17 000 kg/ jahr
Sorry if I misunderstood, that is all my lack of knowledge of the German language will allow me to do.

Posted on Jun 14, 2011

There are one million micrograms in a gram, and one thousand grams in a kilogram (that's what micro and kilo mean). Thus, 11 micrograms is 0.000000011 kilograms.

Posted on Jun 21, 2011

That depends on how much gold you have. 24k merely indicates that the gold is pure, without any other substances mixed in. It refers to the purity, not to the total amount. If you have one kilogram of 24k gold, you have one kilogram of pure gold. If you have two kilograms of 24k gold, you have two kilograms of pure gold. If you have two kilograms of 12k gold, you have one kilogram of pure gold and one kilogram of something else.

Posted on Jun 23, 2011

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### 11 microgram convert to kilogram

11 micrograms = 1.1 × 10-8 kilograms

1 microgram = 1.0 × 10-9 kilograms

So for the future multiply 1.0 x 10-9 by the number of micrograms you have to get the number in kilograms

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