Tutor MathsGuru: Ask me for your burning Maths questions!

[MathIzzzFun]

concern_mum:

hi, i have another 2 questions that need your help.


1. 608 children took part in a skipping competition. Altogether 110 Gold awards were presented to 1/5 of the boys and 1/7 of the grils. How many boys took part in the competition.

2. The ratio of Steven's cards to Benny's cards was 3:4. After Steven bought another 9 cards and Benny lost 18 cards, the ratio became 3:2. Find the total number of cards Steven and Benny had at first.

Thank you.

Hi

q2 is similar to the one you posted earlier - \"Atrirah & Malek\".

Initially, Steven's cards : Benny's cards = 3u : 4u
After Steven bought 9 cards --> Steven's cards = 3u + 9
Benny lost 18 cards --> Benny's cards = 4u - 18
3u+9 : 4u-18 = 3:2

Cross-multiply --> 6u + 18 = 12u - 54, 6u = 72, 1u = 12 .. I think you can carry on from here.

q1 can be solved using the \"stars & moons\" method the students learned in P1-P3.

Girls = * * * * * * * } 608
Boys = # # # # # }

* + # = 110,
so * * = 608 - 5 x 110 = 58,
* = 29
# = 110 - 29 = 81

Boys = 5 # = 405

cheers.

[concern_mum]

hi Guru, thank you for your clear explanation. Q1 seems to be a problem. I have a feeling that the information is insufficient for this question.

[MathIzzzFun]

concern_mum:

hi Guru, thank you for your clear explanation. Q1 seems to be a problem. I have a feeling that the information is insufficient for this question.

Hi

u r welcome.. I am no guru la.. just trying to help out here.

q1 type of problem sums are quite common. for eg.

http://www.flickr.com/photos/62167097@N02/6160671185/in/photostream

http://www.flickr.com/photos/62167097@N02/6175230767/in/photostream

cheers.

[trileets]

Hi, anyone can help me with this?


Ahmad has $40 more than Ben. After giving 1/5 of his money to Ben, Ben now has 7/8 of what Ahmad has. How much did they have?

Thanks a million!

[trileets]

Thanks for your response. It’s for a pri sch kid.

[trileets]

Yes please! Will appreciate very muchhh… thank you.

[MathIzzzFun]

trileets:

Hi, anyone can help me with this?


Ahmad has $40 more than Ben. After giving 1/5 of his money to Ben, Ben now has 7/8 of what Ahmad has. How much did they have?

Thanks a million!

Hi

solution posted at this thread - http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=67&t=25121&start=90

cheers.

[trileets]

:thankyou: Aceumaths and Mathizzit!!



aceumaths , I can solve with Algebra but doubt if my child can fully understand.

Mathsizzfun, saw your solution, got it! It's clear and easily understood. Will show to my DS when he comes home.

Cheers!

[MathIzzzFun]

trileets:

:thankyou: Aceumaths and Mathizzit!!



aceumaths , I can solve with Algebra but doubt if my child can fully understand.

Mathsizzfun, saw your solution, got it! It's clear and easily understood. Will show to my DS when he comes home.

Cheers!

u r welcome

cheers.

[trileets]

sorry, need help for 1 more quest


When Janice bought some files,the average cost was $4. After she bought 1 more file at $16, the average cost became $7. How many files did she buy at first?

Thanks