P4 Maths

• Minu

  20 Sep 10, 12:49

  Hi,

  I need help to solve following problem sum for p4 level using model approach

  There were 4 times as many men as women in a park. After 16 women left the park, there were 12 times as many men as  women remained in the park. How many men were there in the park ?

• Xpoloppx

  20 Sep 10, 16:14

  basically, if men is 4times the women,

  M  [---][---][---][---]

  W  [---]

  den if 16 women left the park,

  M  [-][-][-]ll[-][-][-]ll[-][-][-]ll[-][-][-]

  W [-][16]

  ratio of men to woman is 12 : 1,

  if u see closely, 2 of [-] equals to 16,

  (16/2) x 12 = 96(ANS).

  u understand?

• Minu

  20 Sep 10, 20:32

  Thanks  I've solved this problem with same method but topic 'Ratio' is not in syllabus for  p4 level...do u have any other method ?

• Forbiddensinner

  24 Sep 10, 09:40

  Originally posted by Minu:

  Thanks  I've solved this problem with same method but topic 'Ratio' is not in syllabus for  p4 level...do u have any other method ?

  You do not need to know ratio for this question.

  All you need to know is that:

  2 units = 16 people

  1 unit = 16/2 = 8 people

  12 units = 8 x 12 = 96 people

• Xpoloppx

  25 Sep 10, 14:52

  0.o another way is algebra method.

  but u likely wouldn't know that why to get 16 divide by two, then times 12 without the finding the ratio. if u know how to use the ratio method, just use it in exam, the teacher won't mark you wrong. :).