Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
Slackerz
Slackerz asked in Science & MathematicsMathematics · 9 years ago

Anyone free to help? I seriously need help with this :"(?

1) A contractor agreed to finish a project in 50 days.He employed 120 men who worked 9 hours in a day. After 20 days, he found that only 1/3 of the project was completed. How many more men should he employ to finish the work on time if each man now worked 10 hours a day?

Please show full workings and the answer.

Best answer = 10 Points :)

2) Factorise a^3 - a^2 +2a - 2

3 Answers

Relevance
  • sCoRpIoTaRiUs
    Lv 6
    9 years ago
    Favorite Answer

    50days*120men*9hrs=54,000days*men*hrs to cmoplete the project, then only 1/3 is finished so 54,000/3=18,000 then 54,000-18,000=36,000days*men*hrs, then 50days-20day=30days left, then 36,000days*men*hrs/30days= 1,200men*hrs then 1,200men*hrs/10hrs=120men answer, so it is still 120men, just working additional 1hr/day (@_@)

  • cakesmckakes
    Lv 4
    9 years ago

    2) Factor by grouping

    a^2*(a-1)+2(a-1)

    (a^2+2)(a-1)

  • Heather
    9 years ago

    a^1353

    Source(s): MY BRAIN
Still have questions? Get your answers by asking now.