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# Recent problems solved by 'rfer'

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 Linear_Equations_And_Systems_Word_Problems/698264: What decimal part of 360 is 60?1 solutions Answer 430583 by rfer(12646)   on 2013-01-03 23:03:53 (Show Source): You can put this solution on YOUR website!60/360=0.167
 Average/698237: what is 9 1/3 divided by 20??? please help me!1 solutions Answer 430540 by rfer(12646)   on 2013-01-03 18:04:33 (Show Source): You can put this solution on YOUR website!(28/3)/(20/1)= 28/3*1/20=28/60=7/15
 Rate-of-work-word-problems/698180: if 1/2 gallon of paint covers 1/6 of a wall, then how much paint is needed for the entire wall?1 solutions Answer 430535 by rfer(12646)   on 2013-01-03 18:00:15 (Show Source): You can put this solution on YOUR website!1/2*6=3 gal
 Problems-with-consecutive-odd-even-integers/698231: can you help me find two consecutive odd integers whose sum is 128 ? 1 solutions Answer 430534 by rfer(12646)   on 2013-01-03 17:59:03 (Show Source): You can put this solution on YOUR website!x+x+2=128 2x=128-2 2x=126 x=126/2 x=113 x+2=115
 Average/698233: If you have a 86 what will you need to have a 90 average?1 solutions Answer 430533 by rfer(12646)   on 2013-01-03 17:57:53 (Show Source): You can put this solution on YOUR website!(x+86)/2=90 x+86=90*2 x+86=180 x+180-86 x=94
 Linear-equations/697996: What is an equation for the line with slope 2/3 and y-intercept 91 solutions Answer 430403 by rfer(12646)   on 2013-01-02 20:38:37 (Show Source): You can put this solution on YOUR website!y=2/3x+9
 Rational-functions/697978: f(x)=(1/2)x+1 for -61 solutions Answer 430401 by rfer(12646)   on 2013-01-02 20:37:40 (Show Source): You can put this solution on YOUR website!f(-6)=(1/2)(-6)+1 f(-6)=-3+1 f(-6)=-2
 Equations/698010: A store sole 550 video games during the month of December. If this made up 12.5% of its yearly video game sales, about how many video games did the store sell all year? I tried multiplying 550 with 100 and dividing that by 12.5% but I don't think it's right 1 solutions Answer 430400 by rfer(12646)   on 2013-01-02 20:35:26 (Show Source): You can put this solution on YOUR website!550/0.125=4400
 Length-and-distance/698025: Determine which angle is such that its supplement is five times the angle itself. A. 30 degrees B.150 degrees C.75 degrees D. None of these1 solutions Answer 430399 by rfer(12646)   on 2013-01-02 20:32:55 (Show Source): You can put this solution on YOUR website!A) 30*5+30=180
 Unit_Conversion_Word_Problems/697762: Gold costs \$35 per ounce. What does the gold in an 8-pound bar cost? (note: gold is weighted in troy weight, so 1 pound = 12 ounces.) 1 solutions Answer 430284 by rfer(12646)   on 2013-01-01 22:39:45 (Show Source): You can put this solution on YOUR website!8*12*35=\$3360
 test/697791: (5x^2)(8xy^4)1 solutions Answer 430283 by rfer(12646)   on 2013-01-01 22:37:37 (Show Source): You can put this solution on YOUR website!40x^3y^4
 Percentage-and-ratio-word-problems/697667: If I sell a bag of almonds at \$2.68 to company z and company z charges a 3.5% fee once a sale occurs. What is this price? 1 solutions Answer 430274 by rfer(12646)   on 2013-01-01 20:07:55 (Show Source): You can put this solution on YOUR website!2.68*1.035=\$2.77
 Numeric_Fractions/697744: Can you simplify the fraction: 10/5t ??1 solutions Answer 430273 by rfer(12646)   on 2013-01-01 20:06:05 (Show Source): You can put this solution on YOUR website!=2/t
 Mixture_Word_Problems/697763: If you have 32 oz of ham @.89 cents a pound how much for one ounce1 solutions Answer 430271 by rfer(12646)   on 2013-01-01 20:04:38 (Show Source): You can put this solution on YOUR website!0.89/16=\$0.0625
 Numeric_Fractions/697681: simplify: 7-3(8-2)+6/2 1 solutions Answer 430214 by rfer(12646)   on 2013-01-01 14:38:33 (Show Source): You can put this solution on YOUR website!7-18+3=-8
 Permutations/697695: I have to simplify 12r+5+3r-51 solutions Answer 430212 by rfer(12646)   on 2013-01-01 14:36:44 (Show Source): You can put this solution on YOUR website!=15r
 Travel_Word_Problems/697608: Mr and mrs lucre were returning home after spending a day at the beach. After travelling for three hours at 60 kilometres per hour, they were still 11 kilometres from home. How far from home were they when they began the trip home?1 solutions Answer 430173 by rfer(12646)   on 2013-01-01 00:52:09 (Show Source): You can put this solution on YOUR website!3*60+11=191 km
 expressions/697504: 18-2[2-3{-2(5-4)}]1 solutions Answer 430145 by rfer(12646)   on 2012-12-31 17:39:17 (Show Source): You can put this solution on YOUR website!18-2[2-3{-1}] 18-2[2+3] 18-2*5 18-10=8
 Miscellaneous_Word_Problems/697511: In a basket of lanzones, 30 are rotten. If there are 450 lanzones in the basket, what percent of the number is spoiled? a) 5 2/3% b) 6 2/3% c) 7 2/3% d( 8 2/3%1 solutions Answer 430144 by rfer(12646)   on 2012-12-31 17:36:19 (Show Source): You can put this solution on YOUR website!30/450=0.0666 B) 6 2/3%
 Sequences-and-series/697509: what comes next in this sequense 1,3,7,15,311 solutions Answer 430141 by rfer(12646)   on 2012-12-31 17:34:17 (Show Source): You can put this solution on YOUR website!=63
 Percentage-and-ratio-word-problems/697479: How much of 710 does dividing 7 by 2 account for?1 solutions Answer 430063 by rfer(12646)   on 2012-12-30 23:27:54 (Show Source): You can put this solution on YOUR website!3.5/710=0.0049=0.49%
 test/697455: The lenght is two more than the width. The perimeter of the rectangle is 84 feet.1 solutions Answer 430039 by rfer(12646)   on 2012-12-30 21:26:05 (Show Source): You can put this solution on YOUR website!2w+2(w+2)=84
 Money_Word_Problems/697434: A laptop computer is purchased for \$1200 . Each year, its value is 70% of its value the year before. After how many years will the laptop computer be worth \$300 or less? Write the answer as a whole number. 1 solutions Answer 429990 by rfer(12646)   on 2012-12-30 17:43:36 (Show Source): You can put this solution on YOUR website!1200*0.70=840 840*0.70=588 588*0.70=411.60 411.60*0.70=288.12 Four years
 test/697329: A bag contains 3 red, 4 blue, 5white marbles, what are the odds of drawing a red marble from the bag? My answer was 3:12 but I was incorrect, please explain what I'm doing wrong and show me, thank you so much!! 1 solutions Answer 429893 by rfer(12646)   on 2012-12-29 21:58:38 (Show Source): You can put this solution on YOUR website!reduce the fraction 3/12=1/4
 test/697320: 6/2(1+3)=1 solutions Answer 429878 by rfer(12646)   on 2012-12-29 20:39:20 (Show Source): You can put this solution on YOUR website!6/2*4=24/2=12
 Money_Word_Problems/697306: At what yearly rate will an amount of \$90.00 earns a simple interest of \$15.00 in 4 years? 1 solutions Answer 429864 by rfer(12646)   on 2012-12-29 18:39:50 (Show Source): You can put this solution on YOUR website!15/4=3.75 3.75/90=0.0417=4.17%
 Inverses/697229: The difference between one half of a number and one third of a number is nine. Find the number What is the process of working it out thks1 solutions Answer 429773 by rfer(12646)   on 2012-12-29 00:26:44 (Show Source): You can put this solution on YOUR website! 1/2x-1/3x=9 3/6x-2/6x=9 1/6x=9 x=9/(1/6) x=9*6/1 x=54
 Linear_Equations_And_Systems_Word_Problems/696968: George has apples and oranges in his basket. He has a total of 28 fruits altogether. He has 4 more apples than oranges. How many apples and how many oranges does George have? solve by Graphing.1 solutions Answer 429547 by rfer(12646)   on 2012-12-26 21:21:33 (Show Source): You can put this solution on YOUR website!apples =x+4 oranges =x x+x+4=28 2x=28-4 x=24/2 x=12 x+4=16
 Money_Word_Problems/696601: balance in bank account of a person is 82875 after the deduction at the rate of 2.5 per annum.Find his balance before the deduction 1 solutions Answer 429314 by rfer(12646)   on 2012-12-24 21:44:48 (Show Source): You can put this solution on YOUR website!82875/0.975=\$85,000
 Inequalities/696708: 3 - 5/4x greater than equal to 61 solutions Answer 429313 by rfer(12646)   on 2012-12-24 21:41:52 (Show Source): You can put this solution on YOUR website!-5/4x => 3 x => 3/(-5/4) x => 3*-4/5 x => -12/5 x => -2 2/5
 Money_Word_Problems/696774: I need to solve the following word problem, and I have no idea where to begin. An investor invested a total of \$2,800 in two mutual funds. One fund earned an 8% profit while the other earned a 6% profit. If the investor's total profit was \$202, how much was invested in each mutual fund? I have seen similar questions answered, but I cannot find the method or procedure used, so I cannot follow the logic. Thank you in advance!1 solutions Answer 429312 by rfer(12646)   on 2012-12-24 21:38:00 (Show Source): You can put this solution on YOUR website!0.08x+0.06(2800-x)=202 0.08x+168-0.06x=202 0.02x=202-168 0.02x=34 x=34/0.02 x=\$1700 at 8% 2800-x=\$1100 at 6%