Blue book Questions for tommrow exam. Please help

Test Preparation SAT Preparation
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<p>Hi I have 4 questions in exam in blue book please help me,since I have exam tomorrow :).</p>

<p>For question 6 I know how to do it but the problem is how can I do this fast instead of arranging all numbers and cancelling and getting the median ? Note: I replaced table with writing:</p>

<p>Score: Number of Students
100 1
95 2
90 4
85 1
80 3
75 2
70 2
65 0
60 1
I replaced Table with writing.
6)The scores on tuesday test for 16 students are shown in the table Above. Sam,who was the only student absent on Tuesday,will take the test next week. If Sam receives a score of 95 on the test, what will be the median score for the test?
1)90
2)87.5
3)85
4)82.5
5)80</p>

<p>Those are Grid In question:-</p>

<p>13)A company sells boxes of balloons in which the balloons are red,green,or blue. Luann purchased a box of balloons in which 1/3 of them were red. If there were half as many green balloons in the box as red ones and 18 balloons were blue,how many were in the box ?</p>

<p>17)Alice and Corine stand back to back. THey each take 10 steps in opposite directions away from each other and stop. Alice then turns around, walks toward Corine, and reaches her in 17 steps. The length of one of Alice’s steps is how many times the length of one of Corrine’s steps? Note(All of Alice’s steps are the same legnth and all Coriinne’s Steps are the same length).</p>

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<p>First question
The table is already sorted. You don’t have to re-list everything, you can just cross one from the top, one from the bottom, and keep on going until you’re only left with one (or two, then take the average). Keep in mind that the score 95 has three people, not two. </p>

<p>Second question

[ul]Let r equal the number of red balloons.
[<em>]Let g equal the number of green balloons.
[</em>]Let b equal the number of blue balloons. [/ul]</p>

<p>You know that:

[ul]r=2g
[li]r=1/3[/ul]</p>[/li]
<p>so… </p>

<p>r+g= 2/6 + 1/6 = 1/2 of the whole box</p>

<p>Because the box only contains three colors, you know that the rest must be blue. Therefore, half of the balloons are blue. </p>

<p>Once you know half of the box is eighteen balloons, you simply double it to get the number of balloons in the whole box. </p>

<p>Third question</p>

<p>The distance between them is 10a + 10c, where a and c represent the distance of the woman’s steps. A = the distance of Alice’s step; C = the distance of Corine’s step. </p>

<p>You know that their own steps are always the same length. </p>

<p>Because Alice takes 17 steps to get to Corrine, and the distance hasn’t changed, you know that:</p>

<p>[ul]10c + 10a = 17a[/ul]</p>

<p>You move the 10a from the left to the right, and now you have:</p>

<p>[ul]10c = 7a[/ul]</p>

<p>Then, you isolate the a, so you have:</p>

<p>[ul]a = 10/7c[/ul]</p>

<p>I’m also taking the SAT tomorrow, first time for me. Good luck, and I hope my explanations helped!</p>

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<p>

</p>

<p>With 1/2 and 1/6, set it all up in 1/6ths.</p>

<p>R 1/3 or 2/6</p>

<h1>G 1/6</h1>

<p>R+G = 3/6 or 1/2</p>

<h1>B Other 1/2 = 18</h1>

<p>RGB = 36</p>

<p>Edit Xposted</p>

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<p>

</p>

<p>The solution posted above works, but you can also “neutralize” the round-trip of Alice. She made ten steps in both directions. Had she stayed put, she would have only needed seven steps to join Corine who needed ten steps. This means you can write 10C = 7A or A = 10/7C. </p>

<p>Hence, the answer is 10/7. Remember to enter it as a fraction in the grid.</p>

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<p>@dvdhsu and @Xiggi Thanks guys for your help. </p>

<p>@dvdhsu Yeh the explanation really helped :slight_smile: . Good luck on your test tomorrow aswell :).</p>