Administrative assistant



jose, paul and dan went fishing and all three of them caught a fish dan's fish weighed four times as much as paul,s fish and jose,s fish weigh half as much as dan,s fish altogether the three fish weighed 21 pounds. how much did each fish weigh?

Let x be Jose's weight
Let y be Paul's weight
Let z be Dan's weight

x + y + z = 21 (Equation #1)
z = 4*y, so y = z/4 (Equation #2)
x = (1/2)z = z/2 (Equation #3)


Replace (Equation #2) and (Equation #3) in (Equation #1)
z/2 + z/4 + z = 21
2z/4 + z/4 + 4z/4 = 21
7z/4 = 21
(4/7)* 7z/4 = 21 * 4/7
z = 84/7 = 12
x = z/2 = 12/2 = 6
y = z/4 = 12/4 = 3

Comments for Administrative assistant

Average Rating starstarstarstarstar

Click here to add your own comments

Feb 15, 2013
Rating
starstarstarstarstar
Very Helpful
by: Kristin M. Thomas

Thank you:)

Feb 15, 2013
Rating
starstarstarstarstar
Very Helpful
by: Kristin M. Thomas

Thank you:)

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Basic math word problem.

Recent Articles

  1. Graphs of Quantitative Data

    May 18, 21 06:54 AM

    Graphs of quantitative data, also called grouped data, can be displayed using a histogram or a polygon. Learn how to make histograms using raw data

    Read More