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anonymous

  • one year ago

help! :)

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  1. anonymous
    • one year ago
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    Jenny surveyed 40 students at her school and found that 0.55 of the students she surveyed said their favorite class is math. Another 25% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science? 12 22 30 32

  2. anonymous
    • one year ago
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    @jcoury

  3. anonymous
    • one year ago
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    not sure

  4. anonymous
    • one year ago
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    okay

  5. anonymous
    • one year ago
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    i got c?

  6. mathmate
    • one year ago
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    I prefer to work it out and not deflate the value of the answer by choosing the letters, which have nothing to do with math. So let's work out the problem. How many like math, and how many like science?

  7. phi
    • one year ago
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    40 students at her school and found that 0.55 of the students like math can you find how many like math ? (I would multiply 0.55 and 40)

  8. phi
    • one year ago
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    they are saying 55% of 40 like math. How many is that ?

  9. anonymous
    • one year ago
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    i got 22

  10. phi
    • one year ago
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    yes, then they say 25% of 40 like science. how many is that ?

  11. anonymous
    • one year ago
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    ummmm i dont know... is it like 20?

  12. phi
    • one year ago
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    25% of 40 means multiply \[ \frac{25}{100} \cdot 40\]

  13. anonymous
    • one year ago
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    10

  14. phi
    • one year ago
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    How many more students prefer math over science? any idea ?

  15. anonymous
    • one year ago
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    5?

  16. phi
    • one year ago
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    they are asking if 22 like math and 10 like science, how many more like math than science? do you know how to figure that out ?

  17. anonymous
    • one year ago
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    no

  18. phi
    • one year ago
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    to find how much bigger a number is from another number, subtract big number minus small number

  19. anonymous
    • one year ago
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    12

  20. phi
    • one year ago
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    yes. 12 is the answer.

  21. anonymous
    • one year ago
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    okay thanks :)

  22. anonymous
    • one year ago
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    Ronny, Celina, Jack, and Michelle together placed a total of 20 brownies on a tray. Ronny placed 0.15 of the brownies, Celina placed 3 of the 20 brownies, Jack placed 30% of the brownies, and Michelle placed the remaining brownies. Who placed the most brownies? Ronny Celina Jack Michelle

  23. phi
    • one year ago
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    total of 20 brownies Ronny placed 0.15 of the brownies, how many is that ? how would you figure it out ?

  24. anonymous
    • one year ago
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    how do i solve that

  25. phi
    • one year ago
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    0.15 of 20 brownies, 0.15 of 20 that means 0.15 times 20

  26. anonymous
    • one year ago
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    10

  27. phi
    • one year ago
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    0.15*20 is not 10

  28. anonymous
    • one year ago
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    3

  29. phi
    • one year ago
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    yes. so Ronny put down 3 brownies. they say Celina placed 3 Jack placed 30% of the brownies, how do you figure out how many Jack placed?

  30. anonymous
    • one year ago
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    um.. 0.30 * 3?

  31. phi
    • one year ago
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    close. 0.30 of 20

  32. anonymous
    • one year ago
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    so 0.30 *20

  33. phi
    • one year ago
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    yes

  34. anonymous
    • one year ago
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    6

  35. phi
    • one year ago
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    so far we know Ronny put down 3 brownies. Celina placed 3 Jack put 6 how many is that all together ?

  36. anonymous
    • one year ago
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    9

  37. phi
    • one year ago
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    try again. Ronny 3, Celine 3, Jack 6

  38. anonymous
    • one year ago
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    15

  39. phi
    • one year ago
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    what is 3+3+6?

  40. anonymous
    • one year ago
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    12

  41. phi
    • one year ago
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    Michelle placed the remaining brownies if the other people put 12, how many did Michelle put (so that we get 20) ? know how to figure that out?

  42. anonymous
    • one year ago
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    8?

  43. phi
    • one year ago
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    yes. Michelle put 8 so now we know Ronny put 3. Celina put 3 Jack put 6 Michelle put 8 who put the most?

  44. anonymous
    • one year ago
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    michelle

  45. phi
    • one year ago
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    that is the answer

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