Q&A - P3 Math

[Andaiz]

rrjan:

String P is 8 cm longer than String Q. The total length of String P and String R is 54cm. Find the length of String Q.

Sincere Thanks

rrjan, believe the second sentence should read \"The total length of String P and Q is 54cm.\" here's my take

P |_____|_8_| }

Q |_____| } 54


54 - 8 = 46
Q = 46/2 = 23 cm.

[24hr-mum]

there are 5 times as many local stamps as there are foreign stamps.

which one is the 5 times and which is the 1 times? foreign or local stamps?

[Andaiz]

24hr-mum:

there are 5 times as many local stamps as there are foreign stamps.

which one is the 5 times and which is the 1 times? foreign or local stamps?

The 5x local stamps and the 1x is foreign.

[24hr-mum]

i thought ‘as many local stamps’ means u r using the local stamps as the base for comparison, so the local is 1x and the foreign is 5x?? i m a bit confused…

[Muffins]

24hr-mum:

i thought 'as many local stamps' means u r using the local stamps as the base for comparison, so the local is 1x and the foreign is 5x?? i m a bit confused..

Hi 24 hour mum, although it may look that way, it actually isn't.

Take an example - If A had 5 $1 coins, and B had 1 $1 coin, then A would have 5 times as many $1 coins as B.

Hope that helped

[24hr-mum]

another question:

John has 24 sweets more than Mary.
How many sweets must John give Mary so that Mary will have 12 sweets more than John?

how to draw the model?

[Sun_2010]

24hr-mum:

another question:

John has 24 sweets more than Mary.
How many sweets must John give Mary so that Mary will have 12 sweets more than John?

how to draw the model?

The excess that John has should be divided equally between him and Mary.

So john must give 24/2 = 12 sweets to mary.

http://i54.tinypic.com/11u94sg.jpg\">

My bad, More careless than my Children

sorry 24 hr mum, will redo model

[Sun_2010]

http://i54.tinypic.com/29kumpw.jpg\">

WCW:

Sun_2010:

[quote=\"24hr-mum\"]another question:

John has 24 sweets more than Mary.
How many sweets must John give Mary so that Mary will have 12 sweets more than John?

how to draw the model?

The excess that John has should be divided equally between him and Mary.

So john must give 24/2 = 12 sweets to mary.

http://i54.tinypic.com/11u94sg.jpg\">

Sun, this will make them to have same amount of sweets :)[/quote]
Yeah, sorry more careless than my kids :slapshead:

Here is the revised model

http://i54.tinypic.com/29kumpw.jpg\">

John should first give 12 sweets to Mary, then divide the excess equally.

So 24 - 12= 12
12 /2 = 6

so john should give 12+6 = 18

[24hr-mum]

oh that’s a gd way to understand the question. give away the 12 first. thanks!

[24hr-mum]

but its hard to tell from the abv model that the amt to be given in 18 cos the first part is the 12…