Tutor MathsGuru: Ask me for your burning Maths questions!

[Apphia]

Yes, models will be a great help. It will be easier for me to explain to my daughter.


Warm Rgds, Apphia

[Bunny27]

Hi,

Can someone assist me with this question:

Hi,

Can you help of solve this question?
In the 1st week of a fund raising campaign, class 6a raised 4 times as much as class 6b. In the 2nd week, 6a raised another $240 while 6b raised another $160. Given that 6a raised thrice as much as 6b within these 2 weeks, what was the total amount of money raised by the 2 classes?

Thanks!


:welcome:

Dear Parents,

Are you frustrated/stuck when helping your child solve his/her Maths questions? Are you inclined to use Algebra most of the time? Do you have difficulty trying to use diagrams or other heuristic methods (that Primary School students learn) to solve?

:idea: Post your questions here and see how MathsGuru solve them to the best of her ability. Detailed solutions will be posted back in this thread.

So start asking and watch this space!!

Cheers :celebrate: ,
MathsGuru

P/S (Disclaimer, in case you're wondering...):
Although MathsGuru is a full-time Maths tutor, this thread is meant to be an absolutely free resource for parents (or even children) with no strings attached. Just someone who's passionate about Maths and wanna spread the fun in learning Maths with others. :D[/quote][quote=\"mathsguru\"][b]Original Title: Let MathsGuru Answer Your

[ozora]

got a tricky question: thanks for the help

Adam,Ben, Can and Den had a total of 5856 stickers at first. After 1month, Adam’s stickers is increased by 2/3, Ben’s stickers is decreased by 3/13, Can’s stickers is increased by 153 and Den lost 276 of his stickers. They then had the same number of stickers.
a) how many stickers did Adam have at first?
b) how many stickers did Den have at first?

[vannessa]

Hi I need help on a pri 3 question. Hakim is 26 yrs old. He is 8 yrs older than Rick. How many yrs ago was hakim’s age thrice as Rick?

Thank you[/list]

[ADoc]

LaiHeng:

got a tricky question: thanks for the help

Adam,Ben, Can and Den had a total of 5856 stickers at first. After 1month, Adam's stickers is increased by 2/3, Ben's stickers is decreased by 3/13, Can's stickers is increased by 153 and Den lost 276 of his stickers. They then had the same number of stickers.
a) how many stickers did Adam have at first?
b) how many stickers did Den have at first?

Hi there! Here's my answer for your reference.
cheers! have a great weekend!
http://postimage.org/image/27fpebeuc/

[ADoc]

vannessa:

Hi I need help on a pri 3 question. Hakim is 26 yrs old. He is 8 yrs older than Rick. How many yrs ago was hakim's age thrice as Rick?

Thank you[/list]

Hi! I assume you are or your kid is just about learning models maybe? See if any of the three methods suits your needs. I'll try to be as detailed and clear in my solutions since it's a P3 kid.

Most important concept about this sort of question is that we all aged by the same number of years, months, days (i.e. the difference between any two persons' ages is always constant).

1. work backwards (or guess & check)
26 18
25 17
24 16
23 15
22 14
21 13
20 12
19 11
18 10
17 9
16 8
15 7
14 6
13 5
12 4
therefore ans = 26 - 12 = 14 yrs ago


2. ratio
26 : 18 (now)
difference = 26 - 18 = 8 units

3 : 1 (so many years ago; difference = 2 units)
make the difference in units the same as \"now\"
2 x 4 = 8
therefore

3 : 1 = 3 x 4 : 1 x 4 = 12 : 4
therefore 26 - 12 = 14 yrs ago


3. model
ago

[ ] [ ] [ ] Hakim
[ ] Rick

since age difference does not change, therefore \"so many\" years ago, the difference between Hakim's & Rick's age remains as 8 years.

therefore 3 [ ] - 1 [ ] = 2 [ ] = 8
1 [ ] = 8 divide by 2
= 4

this means Rick was 4 year's old when Hakim was thrice Rick's age.
therefore, present age minus 4 year's old = 18 - 4 = 14 yrs ago

[ozora]

thanks

ADoc:

LaiHeng:

got a tricky question: thanks for the help
Adam,Ben, Can and Den had a total of 5856 stickers at first. After 1month, Adam's stickers is increased by 2/3, Ben's stickers is decreased by 3/13, Can's stickers is increased by 153 and Den lost 276 of his stickers. They then had the same number of stickers.
a) how many stickers did Adam have at first?
b) how many stickers did Den have at first?

Hi there! Here's my answer for your reference.
cheers! have a great weekend!
http://postimage.org/image/27fpebeuc/

[vannessa]

Thank you ADoC

[ADoc]

LaiHeng:

thanks

ADoc:

[quote=\"LaiHeng\"]got a tricky question: thanks for the help
Adam,Ben, Can and Den had a total of 5856 stickers at first. After 1month, Adam's stickers is increased by 2/3, Ben's stickers is decreased by 3/13, Can's stickers is increased by 153 and Den lost 276 of his stickers. They then had the same number of stickers.
a) how many stickers did Adam have at first?
b) how many stickers did Den have at first?

Hi there! Here's my answer for your reference.
cheers! have a great weekend!

[/quote]Hi LaiHeng, you're most welcome!

[ADoc]

vannessa:

Thank you ADoC

Hi Vannessa! hope it was useful. cheers!