Results 1 to 3 of 3

Math Help - Help with word problems PLEASE!

  1. #1
    Junior Member
    Joined
    Jul 2006
    Posts
    28

    Red face Help with word problems PLEASE!

    I have two word problems that do not make any sense please help me.

    Here they are:

    Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75, 63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C.

    and...

    The cost for a long distance phone call is $.36 for the first minute and $.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3.00.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Global Moderator

    Joined
    Nov 2005
    From
    New York City
    Posts
    10,616
    Thanks
    10
    Quote Originally Posted by foofergutierrez
    I have two word problems that do not make any sense please help me.

    Here they are:

    Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75, 63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C.

    and...

    The cost for a long distance phone call is $.36 for the first minute and $.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3.00.
    You need that,
    \frac{75+63+68+x}{4}\geq 70
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member Glaysher's Avatar
    Joined
    Aug 2006
    From
    Newton-le-Willows
    Posts
    224
    And for the other if x is number of minutes then (x - 1) is number of additional minutes so

    .36 + .21(x - 1) < 3
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Problems with integration word problems
    Posted in the Calculus Forum
    Replies: 5
    Last Post: April 25th 2010, 06:39 PM
  2. Word Problems
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: November 6th 2009, 01:01 PM
  3. Word Problems
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: September 22nd 2008, 11:06 AM
  4. 3 word problems
    Posted in the Algebra Forum
    Replies: 11
    Last Post: April 25th 2008, 09:31 PM
  5. Word Problems
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 23rd 2007, 01:34 PM

Search Tags


/mathhelpforum @mathhelpforum