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  1. What percentage of A is B ? (A嘅幾多% 係等於 B) let, unknown... x = (B/A) (100%) e.g. if A = 10, B = 5, what percentage of A is B? x% = B/A x = 5/10 (100%) x = 0...

    分類:科學及數學 > 數學 2006年12月22日

  2. In mathematics, a percentage is a way of expressing a number as a fraction of 100 (per cent...read as "forty-five percent") is equal to 45 / 100, or 0.45. Percentages are used to express how large one quantity is relative to another quantity...

    分類:科學及數學 > 數學 2008年02月24日

  3. ... vy 10% and then decreased by 15%.. find the percentage change.. Let x be the original quantity Then the...by 20% and then increased by 25% find the overfall percentage change of his monthly salary when compared with...

    分類:科學及數學 > 數學 2006年10月17日

  4. 1.A is 20% more than B,what percentage of A is B ? Let B be...the new money of each one receives=$(x/18) the percentage decrease of the amount each one recives ={[(x/15)-(x...

  5. ...15 So, the minimum price for an orange is $3.2 so that the overall profit percentage is not less than 40%. 2. Cost of the oranges = 12 X...

    分類:科學及數學 > 數學 2008年07月25日

  6. ... New spending = 1.125P * 0.96X = 1.08PX Percentage change = (1.08PX – PX)/PX * 100% = 8% increased...

    分類:科學及數學 > 數學 2009年08月16日

  7. ...speed is increased by 25%, what is the percentage change in the time taken? Distance = speed...total expenditure on housing,food and transportation, b) the percentage change in his total expenditure on the above three ...

    分類:科學及數學 > 數學 2010年09月22日

  8. ... = 2.5B A-B = 1.5B - B = 0.5B percentage of A+B is A-B = (A-B)/(A...

    分類:科學及數學 > 數學 2009年07月20日

  9. ... to Friday in a certain week are given below. Day Percentage of absentees Mon 15% Tue 1.5% Wed 10% Thur...

    分類:科學及數學 > 數學 2006年11月18日

  10. 1.New percentage of the cost of raw materials= 12.5% * (1 + 10%)= 13.75%........( of cost of...= 37.5% * (1 + 10%)= 41.25%%........( of cost of cigarette) New percentage of the cost of advertisement = 50% * (1 - 5%)= 47.5%........( of cost of cigarette) ...

    分類:科學及數學 > 數學 2009年10月13日