Q&A - P4 Math

[Starkidz]

:thankyou: :thankyou: :thankyou: :udaman:

excelhub:

Hi,


if 3 books cost as much as 2 pens,
let's say if we dont buy the pens,
with $32, we can buy 8 books.

1 book = $4.

3books = 2pens = $12
1 pen = $6.

3 pens = $18
3 books = $12
total : $30.

[Starkidz]

Can help me with this question?i can't figure out the answer :? :? .Please explain with working.


Carol paid $72 for 2 blouses and 1 dress.5 blouses cost as much as 2 dresses.How much more did she pay for each dress than a blouse?

Thanks :thankyou:
Sara :imdrowning:

[smartmummy]

Saravana:

Can help me with this question?i can't figure out the answer.Please explain with working.


Carol paid $72 for 2 blouses and 1 dress.5 blouses cost as much as 2 dresses.How much more did she pay for each dress than a blouse?

Thanks
Sara

1 blouse=2/5 dress
blouse [][]
dress [][][][][]

2blouses+1dress=$72
4u+5u=$72
1 u=$8
ans : 3*$8=$24

[Starkidz]

smartmummy:

Saravana:

Can help me with this question?i can't figure out the answer.Please explain with working.


Carol paid $72 for 2 blouses and 1 dress.5 blouses cost as much as 2 dresses.How much more did she pay for each dress than a blouse?

Thanks
Sara

1 blouse=2/5 dress
blouse [][]
dress [][][][][]

2blouses+1dress=$72
4u+5u=$72
1 u=$8
ans : 3*$8=$24

how do you get 1 blouse =2/5 dress. :?

[smartmummy]

5blouses=2dresses

[smartmummy]

Saravana:

smartmummy:

[quote=\"Saravana\"]Can help me with this question?i can't figure out the answer.Please explain with working.


Carol paid $72 for 2 blouses and 1 dress.5 blouses cost as much as 2 dresses.How much more did she pay for each dress than a blouse?

Thanks
Sara

1 blouse=2/5 dress
blouse [][]
dress [][][][][]

2blouses+1dress=$72
4u+5u=$72
1 u=$8
ans : 3*$8=$24

how do you get 1 blouse =2/5 dress. :?[/quote]

[ruohoo97]

smartmummy:

Saravana:

[quote=\"Saravana\"]Can help me with this question?i can't figure out the answer.Please explain with working.


Carol paid $72 for 2 blouses and 1 dress.5 blouses cost as much as 2 dresses.How much more did she pay for each dress than a blouse?

Thanks
Sara

[/quote]Dear Sara,

5 Blouses= 2 Dresses
2 Blouses + 1 Dress=72
-_______________________
Using the replacing method, you get:-

9 blouses =72 X2
1 Blouse=8
1 Dress=40

40-8=32

[MathIzzzFun]

Saravana:

Can help me with this question?i can't figure out the answer :? :? .Please explain with working.


Carol paid $72 for 2 blouses and 1 dress.5 blouses cost as much as 2 dresses.How much more did she pay for each dress than a blouse?

Thanks :thankyou:
Sara :imdrowning:

One approach is to use the equal fraction method to \"convert\" to units....

5 blouses = 2 dresses
10/2 blouses = 10/5 dresses

1 blouse --> 2 units, 2 blouses --> 4 units
1 dress --> 5 units
5 units - 2 units = 3 units --> 1 dress cost 3 units more than a blouse

2 blouses + 1 dress --> 9 units = $72
1 units --> $8

3 units --> $24,
1 dress cost $24 more than a blouse.


cheers.

[smartmummy]

hi ruohoo97!

pls check ur calculation…
9b=722
1b=82
i think u missed multiply by2?

[ssmummy]

2 blouses + 1 dress –>$72

4 blouses + 2 dresses –> $72 x 2 = $144

2 dresses cost as much as 5 blouses

Therefore,
4 blouses + 5 blouses –> $144
1 blouse –> $144/9 =$16

Since 2 blouses and 1 dress cost $72,
1 dress –> $72 - $16 - $16 = $40

$40 - $16 = $24
For each dress, she paid $24 more.