Q&A - PSLE Math

[bobsg01]

Thanks for the solution MathIzzzFun.

[bobsg01]

Ratio problem.


Thanks for the help.

http://i52.tinypic.com/4lkj9f.jpg\">

[MathIzzzFun]

bobsg01:

Ratio problem.


Thanks for the help.

http://i52.tinypic.com/4lkj9f.jpg\">

Hi

http://www.flickr.com/photos/62167097@N02/5973013872/in/photostream

cheers.

[bobsg01]

Thanks for the solution MathIzzzFun.


Have a query:

Alina = 42 / 7 = 6 units

Adeline = (how to calculate 10 units + 6)

[MathIzzzFun]

bobsg01:

Thanks for the solution MathIzzzFun.


Have a query:

Alina = 42 / 7 = 6 units

Adeline = (how to calculate 10 units + 6)

Hi

Originally, the ratio was 3: 5 = 6U : 10U >> 10U was what Adeline had at first. After she got 6 more, it becomes 10U + 6 and this is equal to 7(U+7)

cheers.

[bobsg01]

IC :yikes:


3: 5 = 6U (3+3) : 10U (5+5)

Thanks for the enlightening MathIzzzFun.

[wkong]

Hi All,


Need help for the following:

Mdm Zhang packed some beads into 14 small boxes and 15 big boxes. There were equal number of beads in each small box and equal number of beads in each big box. 3/8 of the beads were packed in small boxes. How many beads were there in each big box?

Thanks,
wkong

[tianzhu]

wkong:

Hi All,


Need help for the following:

Mdm Zhang packed some beads into 14 small boxes and 15 big boxes. There were equal number of beads in each small box and equal number of beads in each big box. 3/8 of the beads were packed in small boxes. How many beads were there in each big box?

Thanks,
wkong

Hi

This has been discussed in one of the earlier posts.

Please refer to the answer by MathIzzzFun
http://www.flickr.com/photos/62167097@N02/5664739745/in/photostream

Best wishes

[bobsg01]

Need help with this speed question.


Thanks in advance for your help.

http://i53.tinypic.com/2dtsk02.jpg\">

[MathIzzzFun]

bobsg01:

Need help with this speed question.


Thanks in advance for your help.

http://i53.tinypic.com/2dtsk02.jpg\">

Hi

Mandy reached town Y at 3pm after 5h of driving. At 1pm, she was 2h x70 km/h = 140 km from Town Y.

So, at 1 pm (after driving for 3h), Nora was 40km + 140 km = 180 km from Town Y.

Nora's speed = 180km / 3h = 60 km/h

Mandy took 5 h to drive from Town X to Town Y.
So, time taken by Nora = 70/60 x 5 h= 350 min = 5h 50min

Time at which Nora arrived at Town X = 10 am + 5h 50min = 3.50pm

cheers.