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How many backpacks out of 38 contained none of the three writing instruments?
First, I would like to say that the whole question is not here. The question states: upon examining the contents of 38 backpacks, it was found that 23 contained a black pen, 27 contained a blue pen, and 21 contained a pencil, 15 contained both a black pen and a blue pen, 12 contained both a black pen and a pencil, 18 contained both a blue pen and a pencil and 10 contained all three items. How many backpacks contained none of the three writing instruments? OK I will explain this the best I can! Starting out, their are 10 backpacks that contain all the items. 12 contained both a black and blue pen. You would subtract 10 from 12; therefore there are 2 backpacks that contain only black and blue pens. 18 contain both a blue pen and a pencil. subtract 10 from 18 and you get 8. 15 contained both a black pen and a blue pen. You would subtract 10 from 15 and you get 5. There are 23 with black pens. So you would do 23 - (5+10+2)= 6. There are 6 backpacks that contain only black pens. There are 27 that contain blue pens. So you would do 27 - (5+10+8) = 4. There are 4 backpacks that contain only blue pens. There are 21 backpacks that contain a pencil. You would do 21 - (2+10+8) = 1. All together, there a 6 that contain only black pens, 5 that contain only black and blue pens, 4 that contain only blue pens, 10 that contain all three items, 2 that contain only black pens and pencils, 8 that contains only blue pens and pencils, and 1 that contains only 1 pencil. So you would add 6+5+4+10+8+2+1= 36. There are 38 backpacks, so you would subtract 36 from 38. There are 2 backpacks that contain none of the three writing instruments. Ashfords quiz says this is right.
What are the release dates for DuckTales - 1987 Once Upon a Dime 1-38?
DuckTales - 1987 Once Upon a Dime 1-38 was released on: USA: 7 December 1987
What are the release dates for The Judge - 1986 II Once Upon a Time 4-38?
The Judge - 1986 II Once Upon a Time 4-38 was released on: USA: 1 September 1989
What is the answer to level 38 on busta brain?
to finish level 38 u have to put in "once upon a time" since the one is above a time
What is the Value of 1825 one cent piece?
It has a value from $38 to $25,000 depending upon the condition of the coin.
How long will it take to drive from Yeadon Leeds to Stratford upon Avon?
2 hours and 38 minutes
How much would a one hundred pound person weigh if placed upon Mars?
They would weigh approximately 38 pounds.
What episode of Naruto SD does the Akatsuki appear?
Episode 38, when Rock Lee and Tenten accidentally stumble upon the Akatsuki hideout.
How many alcohol content in one shot of teqila?
Tequila can be of different alcohol contents, but generally is between 38% to around 40% but can be produced at a rate of between 35-55%. Hope this helps. www.WinnersChoice.co.uk
Who are tamar's children in the bible?
Gen:38:29: And it came to pass, as he drew back his hand, that, behold, his brother came out: and she said, How hast thou broken forth? this breach be upon thee: therefore his name was called Pharez. Gen:38:30: And afterward came out his brother, that had the scarlet thread upon his hand: and his name was called Zarah.
Is the square root of 38 rational or irrational?
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What 76 divided by 2?
38
