Tutor MathsGuru: Ask me for your burning Maths questions!

[Dharma]

Hi Mathsguru,


The kids who will be doing PSLE in 2010 and their parents are very fortunate to have you around. Your solutions and crystal clear explanations will surely be a great help to all of us. :celebrate:

Thanks for your active participation.
:thankyou:

[KSP]

:congrats: Mathsguru, you deserve this award. :celebrate: :rahrah:

ChiefKiasu:

Nothing beats being recommended for an award by a fellow member :).

mathsguru is hereby awarded the Community Support Award of 500 KPs :).

[Muffins]

ChiefKiasu:

Nothing beats being recommended for an award by a fellow member :).


mathsguru is hereby awarded the Community Support Award of 500 KPs :).

You deserve it, Mathsguru! Your guidance and help have shown us new ways of solving seemingly tough problems. CONGRATULATIONS, MATHSGURU, AND THANK YOU! :congrats: :thankyou:

[kitty2]

ChiefKiasu:

Nothing beats being recommended for an award by a fellow member :).


mathsguru is hereby awarded the Community Support Award of 500 KPs :).

Well Done :congrats: You're indeed extremely helpful and kind :thankyou:

[kitty2]

mathsguru,please :?: Thank you



1)During a telematch,each group was supposed to collect as many coloured balls as possible.Each colour represents a certain point as followed

red 2 points
green 5 points
blue 3 points

Within each container,the number of red balls was 20% more than the number of blue balls and 10% lesser than the number of green balls.Given that the total possible points if the group managed to collect all the balls was 724 points,how many red balls were there?

2) Jason had 75% as many stickers as Susan.After Jason and Susan bought another 48 stickers and 4 stickers respectively,Jason had 20% more stickers than Susan.How many stickers did Jason have at first?

3)Amos had 20% more sweets than Daniel.Amos started by giving 30% of his sweets to Daniel.Daniel in return gave 25% of his sweets to Amos.In the end.Daniel had 32 lesser sweets than Amos.How many sweets did Amos have at first?

[Muffins]

kitty2:

mathsguru,please :?: Thank you



1)During a telematch,each group was supposed to collect as many coloured balls as possible.Each colour represents a certain point as followed.

green 5 points
red 2 points
blue 3 points

Within each container,the number of red balls was 20% more than the number of blue balls and 10% lesser than the number of green balls.Given that the total possible points if the group managed to collect all the balls was 724 points,how many red balls were there?

2) Jason had 75% as many stickers as Susan.After Jason and Susan bought another 48 stickers and 4 stickers respectively,Jason had 20% more stickers than Susan.How many stickers did Jason have at first?

3)Amos had 20% more sweets than Daniel.Amos started by giving 30% of his sweets to Daniel.Daniel in return gave 25% of his sweets to Amos.In the end.Daniel had 32 lesser sweets than Amos.How many sweets did Amos have at first?

Hi kitty2, hope I can help though I'm not mathsguru!

Q1) Change everything to LCM, so:
G = 20 units
R = 18 units
B = 15 units

20u X 5 =100u
18u X 2 =36u
15u X 3 = 45u
(100+36+45)u = 181u
181u = 724
1u = 4
Red = 18u
4X 18 = 72

Q2) S : J
4u : 3u
(+4) (+48 )
5u : 6u
5 X (3u + 4) = 15u + 240
6 X (4u + 48 ) = 24u + 24
(24u + 24) - (15u + 240)
15u + 240 = 24u + 24
= 240 = 9u + 24
240 - 24 = 216
216 = 9u
216/9 = 24
24 = 1u
24 X 3 = 72

Q3) D : A
50u : 60u
60u X 30% = 18u
60u - 18u = 42u
50u + 18u = 68u
68u X 25% = 17u
68u - 17u = 51u
42u + 17u = 59u
59u - 51u = 8u
8u = 32
32/8 = 4
4 X 60 = 240

Hope I helped!

[kitty2]

:thankyou: Muffin

[Muffins]

kitty2:

:thankyou: Muffin

No problem, kitty2!

[mathsguru]

kitty2:

1)During a telematch,each group was supposed to collect as many coloured balls as possible.Each colour represents a certain point as followed


red 2 points
green 5 points
blue 3 points

Within each container,the number of red balls was 20% more than the number of blue balls and 10% lesser than the number of green balls.Given that the total possible points if the group managed to collect all the balls was 724 points,how many red balls were there?

2) Jason had 75% as many stickers as Susan.After Jason and Susan bought another 48 stickers and 4 stickers respectively,Jason had 20% more stickers than Susan.How many stickers did Jason have at first?

3)Amos had 20% more sweets than Daniel.Amos started by giving 30% of his sweets to Daniel.Daniel in return gave 25% of his sweets to Amos.In the end.Daniel had 32 lesser sweets than Amos.How many sweets did Amos have at first?

Hi Kitty2,

Sorry for the delayed response, been pretty occupied over the weekend...Anyway, here are my solutions.

In my examples, you will see that I actually have decimal numbers for my no. of units in Qn 2 & 3. It doesn't matter, cos it's all proportion. As long as the amount for 1 unit is a whole no. (as the question deals with items that require whole no.s e.g. stickers, etc), it means your calculation should be correct. I thought this is easier than trying to find the LCM for Questions 2 & 3.

Let me know if you need clarification ya...

http://www.postimage.org/image.php?v=PqeCxwS

http://www.postimage.org/image.php?v=PqeCCw9

http://www.postimage.org/image.php?v=PqeCsxA

Cheers,
MathsGuru

[kitty2]

:thankyou: mathsguru