If 20% of a equals 25% of B, then a: B =? Explain why

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• 1. When 5 g Sugar and 25 g water are added to 20% sugar water, the percentage of sugar water is ()? A. more than 20% B. equal to 20% C. less than 20% D. Not sure
• 2. W is a plus B plus C. It is known that a equals 18, B equals 22 and C equals 20. What percentage of W is ABC
• 3. 20% of a is equal to 80% of B. A is 120. What's B?
• 4. How to prove that (a + 1 / a) (B + 1 / b) is greater than or equal to 25 / 4?
• 5. If a > 0, b > 0, a + B = 1, the square of (a + 1 / a) + (B + 1 / b) is greater than or equal to 25 / 2 Use sine and cosine functions to solve the problem
• 6. ① A > O, b > O, and a + B = 1, prove that (a + 1 / a) (B + 1 / b) is greater than or equal to 25 / 4 ② A, B belong to R and a is not equal to B. prove {1 + (square of a)} - under | root {1 + (square of B)}|
• 7. Given that a > 0, b > 0, a + B = 1, it is proved that (a + 1 / a) (B + 1 / b) is greater than or equal to 25 / 4
• 8. In △ ABC, a, B, C, is the length of three sides, if the square of a plus the square of B equals 25. A minus B equals 7, and C = 5, then the height of the largest side is
• 9. Given a + A + A + B + B = 64, a + B + B = 56, what are a and B?
• 10. If the opposite number of a is the smallest natural number and B is the largest negative integer, then a + (- b)=______ ．
• 11. If a divided by B equals 25 percent, then the following statement is true AA is 25% of B, BB is 25% of a, CA is 4 times of B
• 12. What is 18 minus 4 out of 9, 44 minus 11 out of 10, 6.25 minus 2 and 3 out of 5
• 13. If the square of a + the square of B = 25, a + B = 7, find the square of ① A-B; ② AB, ③ a-b
• 14. Simple 1.5/1.25 is equal to?
• 15. Four times five equals eight out of thirteen times a times one equals one Four times five equals eight out of thirteen times a times one equals one
• 16. (4 / 3) times 3 / 4 equals 2 / 5 times () equals 0.25 times () equals 1
• 17. Seven and one in seven minus three and one in two equals
• 18. It is known that the ratio of a to B to C is equal to two to three to four
• 19. Given a = - 1 and 1 / 2, a = - 2, C = 2, then | a | + | B | - | C | is equal to
• 20. One of a and one of B is equal to one of 2011. How to find the type of A. B