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  1. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    theres a quesiton in variations which says: sixteen workers can build a wall in 25 days how many workers are needed if the wall has to be built in 10 days? I dont understand the solution process in the book so can anyone explain it in a better way. thanks
  2. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Guys, please check this pdf again and turn to page 4 where there is variations, it says direct proportion: y=kx only, it doesnt say y=kx^2, howcome? thanks
  3. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Its x= A/y-2
  4. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    yeah paper 1, year 1996 question 2: Make x the subject of the formula y=A+2x/x
  5. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    That was really easy btw, i just dont know when to like get rid of the fraction, because every question regarding this topic is different from the other, so its hard to grasp the concept.
  6. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Your right i jus checked the book
  7. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Why isnt the +2 added to the 3 like this: t=3+2/s ?
  8. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    i actually got it from my past paper book, thats all i can give im afraid. You can write it down so its easier.
  9. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    i totally got this, but dont get signiicant numbers, like it would give me a big number and would ask me to round 2 significant numbers, can you just give me a simple number and round it to 2 sig numbers and then give me a complicated number so i understand better?
  10. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Sure Like: from paper 1, year 1997, question 21 Given that: s= 3/t-2 Express t in terms of s
  11. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    omg that didnt help im sorry, i just dont get this at all, cant follow through. can you start from a basic example first, i never really got rounding from the beginning.
  12. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    okey thanks , can you tell me how to solve questions which say: x in terms of y or something, when u have to rearrange the whole formula to make x in the right hand side, its very frustrating for me to understand.
  13. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    its the same, check page three on it
  14. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Would this be considered a formula book? See on page three where it has the percentage points it says SP-CP, whats that?
  15. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Alright thanks :) guys i need help in significant numbers, i never understand them, even when people send me links, i want someone to explain it to me with examples.
  16. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    yeah you always make the left hand side value as the numerator, thats how i remeberd.
  17. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Alright i got this thanks so it says find y when x is 10, so we will do : y=kx^2 y=0.125 (10)^2 y=0.125x100 y= 12.5 am i right?
  18. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    Could you correct it and explain please
  19. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    guys in question 8, how is K (constant) 8? and isnt the formula : y=kx^2?
  20. Z

    can someone post the link to the gcse olevels timetable OCT/NOV 2012

    oh i get this, its the same thing i learned in higher here, you added 100+20 since it says he got paid 20% more right?
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