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You are not logged in. #1 20061028 20:07:06
Simultaneous EquationsExercises 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. Last edited by Toast (20061212 20:05:59) #2 20061028 20:35:24
Re: Simultaneous EquationsWorded Problems  To be answered in full literate sentences. 16. Find a fraction which is equal to if 10 is added to both the numerator and the denominator and is equal to if 5 is subtracted from both the numerator and the denominator. 17. A secretary buys a number of 45c and 60c stamps for a total cost of $22.50. If she interchanged the number of each type of stamp, the total cost would have been $23.70. How many of each type of stamp did she originally buy? 18. On one of the escalators at JFK Airport, Tony finds that if he walks down 26 steps he needs 30 seconds to get to the bottom, but if on another trip he makes 34 steps, then he needs only 18 seconds to reach the bottom. a) i) Show that if the escalator is stationary, Tony will have to walk 46 steps to get to the bottom. ii) How many seconds does it take the escalator to travel one step? Andy decides to do yet another trip on the escalator. Just as he gets on the escalator, Ronald starts walking up the same escalator from the bottom. b) i) If Tony walks at a speed of 1 step per second and Ronald walks at a speed of 2 steps per second, after how many seconds will they meet on the escalator? ii) Instead, Ronald walks 2 steps per second faster than Tony. It takes 16 seconds before they meet on the escalator. Calculate Tony's walking speed. #5 20070126 16:53:06
Re: Simultaneous EquationsHi #6 20070126 17:33:52
Re: Simultaneous EquationsSorry littlelittle, you're right, I don't know how I messed up the answers for that one, I've changed the answers so they're right now. #7 20070127 05:04:26
Re: Simultaneous EquationsSorry  no way. Pl don't say that. 