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20 results for "algebra"
Questions 20
If (a + b) : (a - b) = 15 : 1, then what is the ratio (a² + b²) : (a² - b²)?
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The sum of two numbers is 40 and their difference is 4. What is the ratio of the two numbers?
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If a : b = c : d, then (ma + nc) / (mb + nd) is equal to:
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If a : b = 2 : 1, then the value of (a² - b²) : (a² + b²) is:
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If 4a = 5b and 7b = 9c, then find the ratio a : c.
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What number should be added to each of 6, 7, 15 and 17 so that the resulting numbers are in proportion?
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Two numbers are in the ratio 4:7. If 10 is subtracted from each, the ratio becomes 1:2. Find the greater number.
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Find a third proportional to (x² - y²) and (x - y).
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If x/2 = y/3 = z/5, then find the value of (x + y + z) / z.
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If x:y = 3:4, what is the value of (4x + 5y) : (5x - 2y)?
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The third proportional to (a² - b²) and (a - b) is:
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If a : b = 2 : 3 and b : c = 4 : 5, then find a² : b² : bc.
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The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1,250. Find the numbers.
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If x : y = 5 : 2, find the value of (8x + 9y) : (8x + 2y).
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If x/5 = y/8, then (x+5) : (y+8) is equal to:
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Two numbers are in the ratio 1 : 2. If 7 is added to both, their ratio changes to 3 : 5. Find the greater number.
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If a/b = 4/5 and b/c = 15/16, then (c²-a²) / (c²+a²) is:
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If X:Y = 5:4, what is the value of (X + Y) : Y?
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If a/2 = b/3 = c/4, then find A:B:C.
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If x : y = 3 : 4, then find (7x + 3y) : (7x - 3y).
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