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What is 3 percent of y?(1)y=300(2) 6 percent of y is 18.
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What is the value of ab?(1) 3a+ 2b = 23(2) a + 4b = 21
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If 60 people attend a party, how many of these people drink coffee?(1) The number of people at the party who drink coffee is 4 times the number of those who do not drink coffee.(2) The number of people who don't drink coffee is 36 less than the number who do drink coffee.
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Does r- s= 52?(1) r = -s-2(2) S = -27 and r = 25
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Just before Christmas stereo x and stereo y both go on sale. If for the sale, both stereos are discounted from their regular prices, is the Christmas sale price of stereo x lower than the Christmas sale price of stereo y?(1) The sale price of stereo x is 15 percent less than its regular price; the sale price of stereo y is 20 percent less than the regular price.(2) The sale price of stereo x is $150 less than its regular price; the sale price of stereo y is $200 less than its regular price.
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If a and b are positive integers, is $${2}{\sqrt{a+b}} >{4}\sqrt{b}$$?(1)b >3a(2)a + b >3
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Is $${a}-{b}\ge{3}$$?(1)$$a\ge8$$(2)$$b\le5$$
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A certain club has 20 members. How many of the members of the club are female?(1) The ratio of male to female members in the club are 3 : 2.(2) There are 4 more male members in the club than female members.
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If n is a positive integer is n + 4 divisible by 8?(1) n + 12 is divisible by 8(2) n is divisible by 6
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On January 1st Thomas deposited $2,000 into an interest bearing checking account. If he made no withdrawals, what was the total amount Thomas had in the checking account on December 31st of the same year?(1) Thomas deposited an additional $4,000 throughout the year.(2) The checking account earned 7 percent simple annual interest.
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DS，一个封口的半圆(半径是r)和另外一个正常的圆(半径是R)，半圆的面积小于正常的圆吗1：r小于R2：半圆的周长小于 另外一个正常的圆的周长
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If x and y are positive integers and x is a multiple of y, is y=2?(1)$$Y\neq1$$(2) x+2 is a multiple of y.
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PREP07 Test 1
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A garden store purchased a number of shovels and a number of rakes. If the cost of each shovel was $14 and the cost of each rake was $9, what was the total cost of the shovels and rakes purchased by the store?(1) The ratio of the number of shovels to the number of rakes purchased by the store was 2 to 3.(2) The total number of shovels and rakes purchased by the store was 50.
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$$x \neq y$$, is $$\frac{({x}+{y})^{2}}{({x}-{y})^{2}}$$？(1) xy=5 (2)$${x}^{2}+{y}^{2}={5}{x}{y}$$
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OG18-数学分册
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If xy = -6, what is the value of xy (x +y )?(1) x - y = 5 (2) $${x}{y}^{2}={18}$$
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九宫格，中间的数字是7，右下角数字是11，然后左上到右下三个数和右上到左下三个数的和相同都是s，问s是否是211)每一列数字和都是s 2)每一行数字都是s 
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OG17 OG18 OG19 OG20 OG2022
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Is w + $${h}^{4}$$ positive?(1) h is positive.(2) w is positive.
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OG17 OG18 OG19 OG20 OG2022
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A, B, C and D are points on a line. If C is the midpoint of line segment AB and if D is the midpoint of line segment CB, is the length of line segment DB greater than 5?(1) The length of line segment AC is greater than 8.(2) The length of line segment CD is greater than 6.
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OG17 OG18 OG19 OG20 OG2022
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For a basic monthly fee of F yen ($F), Naoko's first cell phone plan allowed him to use a maximum of 420 minutes on calls during the month. Then, for each of x additional minutes he used on calls, he was charged $M, making his total charge for the month $T, where T = F + xM. What is the value of F?(1) Naoko used 450 minutes on calls the first month an the total charge for the month was $13,755.(2) Naoko used 400 minutes on calls the second month and the total charge for the month was $13,125.
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OG17 OG18 OG19 OG20 OG2022
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In a product test of a common cold remedy, x percent of the patients tested experienced side effects from the use of the drug and y percent experienced relief of cold symptoms. What percent of the patients tested experienced both side eddects and relief of cold symptoms?(1) Of the 1,000 patients tested, 15 percent experienced neither side effects nor relief of cold symptoms.(2) Of the patients tested, 30 percent experienced relief of cold symptoms without side effects.
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