Tutor MathsGuru: Ask me for your burning Maths questions!

[iFruit]

littlecloud:

Hi,

I have a question on P5 Maths. Thanks in advance for helping.
Z had 70 more dresses than skirts. Z sold 3/4 of the dresses and 3/5 of the skirts. Z sold 126 more dresses than skirts. What fraction of the remaining clothes that Z had were skirts.

Let Dresses = 20d, skirts = 20s

20d - 20s = 70-----> (1)

3/4 of Dresses = 15d; remaining = 5d
3/5 of skirts = 12s; remaining = 8s

15d - 12s = 126------> (2)

required fraction = 8s/(5d+8s)

from (1) an (2), we get

4d -4s = 14
5d - 4s = 42
so,
d = 42 - 14 = 28------------> 5d = 140
4s = 4d -14 = 112 - 14 = 98----> 8s = 196


8s/(5d+8s) = 196/(140+196) = 196/336 = 49/84

[pineapple tarts]

David and Peter have 108 stamps. David and John have 44 stamps. John have 5 times more stamps than Peter. How many stamps does Peter have.


I see stars..... :oops:

[tianzhu]

pineapple tarts:

David and Peter have 108 stamps. David and John have 44 stamps. John have 5 times more stamps than Peter. How many stamps does Peter have.

Hi

Please confirm underlined numbers.

If numbers are correct, then underlined sentence does not look logical.

Best wishes

[pineapple tarts]

tianzhu:

pineapple tarts:

David and Peter have 108 stamps. David and John have 44 stamps. John have 5 times more stamps than Peter. How many stamps does Peter have.

Hi

Please confirm underlined numbers.

If numbers are correct, then underlined sentence does not look logical.

Best wishes

Sorry, it should be Peter has 5 times as many as John.

[Hiroii-kun]

Hi this is a p4 qn.

is it solvable? seems like lack of info to me

Mrs Lim bought 12 pears and 4 apples. Mrs Tan bought 12 apples and 4 pears.
Mrs Tan paid $1.60 less than Mrs Lim. How much did a pear cost ?

[tianzhu]

pineapple tarts:

Sorry, it should be Peter has 5 times as many as John.

David and Peter have 108 stamps. David and John have 44 stamps. Peter has 5 times as many stamps as John. How many stamps does Peter have?

Hi

You may wish to use MD.

In both scenarios, David’s number of stamps remains the same.

The difference between Peter and John is 4 units.

108 – 44 --- 64

4 units --- 64
1 unit --- 16

5 units --- 80

Peter has 80 stamps.

Best wishes

[tianzhu]

Hiroii-kun:

Hi this is a p4 qn.

is it solvable? seems like lack of info to me

Mrs Lim bought 12 pears and 4 apples. Mrs Tan bought 12 apples and 4 pears.
Mrs Tan paid $1.60 less than Mrs Lim. How much did a pear cost ?

Hi

From your question, we can tell that a pear costs 20 cents more than an apple.

Some information is missing, perhaps the cost of an apple?

Best wishes.

[Hiroii-kun]

tianzhu:

Hiroii-kun:

Hi this is a p4 qn.

is it solvable? seems like lack of info to me

Mrs Lim bought 12 pears and 4 apples. Mrs Tan bought 12 apples and 4 pears.
Mrs Tan paid $1.60 less than Mrs Lim. How much did a pear cost ?

Hi

From your question, we can tell that a pear costs 20 cents more than an apple.

Some information is missing, perhaps the cost of an apple?

Best wishes.

yeah i also feel that there is some missing info
the best i can find is also the pear cost 20 cents more
thanks anyway!

[pineapple tarts]

tianzhu:

pineapple tarts:

Sorry, it should be Peter has 5 times as many as John.

David and Peter have 108 stamps. David and John have 44 stamps. Peter has 5 times as many stamps as John. How many stamps does Peter have?

Hi

You may wish to use MD.

In both scenarios, David’s number of stamps remains the same.

The difference between Peter and John is 4 units.

108 – 44 --- 64

4 units --- 64
1 unit --- 16

5 units --- 80

Peter has 80 stamps.

Best wishes

Dear tianzhu,

thank you very much for your help. I keep on using 64 divide by 6 cos Peter has 5 times as many as John. How do I explain to my child??? :?

[tianzhu]

pineapple tarts:

Dear tianzhu,
thank you very much for your help. I keep on using 64 divide by 6 cos Peter has 5 times as many as John. How do I explain to my child??? :?

Hi

Hope this helps.

Best wishes

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