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Recent problems solved by 'sbasics2005'

sbasics2005 answered: 1 problems
 test/15875: Pencils cost 25 cents a piece. Pens cost 80 cents a piece. Susan spent 20 dollars for a total of 36 pens and pencils. How many pencils did she buy? And: The ratio of two numbers is 8 to 5. the difference of the numbers is 24. what are the numbers? 1 solutions Answer 7812 by sbasics2005(1)   on 2005-10-18 01:32:47 (Show Source): You can put this solution on YOUR website!Let Number of pencils bought be 'x' and pens be 'y'. Then 25x + 80y = 2000 ----- (1) and x + y = 36 ------- (2) 5x + 16y = 400 [Divide eq (1) with 5.] 5x + 5y = 180 [Multiply eq (2) with 5.] 11y = 220 y = 20 x + 20 = 36 [Use eq(1).] x = 16 Therefore, Susan bought the number of pencils are 16. And Let the two numbers be 8x and 5x. 8x - 5x = 24 3x = 24 x = 8 Therefore, the numbers are 64 and 40.