Tutor MathsGuru: Ask me for your burning Maths questions!

[starlight1968sg]

Hi,

I need some help again.

1) Andy, Betty, Candy and Danny each have some money. The amount of money Andy has is 1/3 of the total amount of money Betty, Candy and Danny have. The amount of money Betty has is 1/4 of the total amount of money Andy, Candy and Danny have. The amount of money Candy has is 1/5 of the total amount of money Andy, Betty and Danny have. If Danny has $1725, how much do they have altogether?

2) Tom and Jerry each has some money. If Tom spends $90 per day and Jerry spends $45 per day, Tom will have $1100 left when Jerry has spent all his money. If Tom spends $45 each day and Jerry spends $90 each day, Tom will have $1700 left when Jerry has spent all his money. How much did Jerry have?

I am totally clueless on how to start?

MTIA.

[Vanilla Cake]

starlight1968sg:

1) Andy, Betty, Candy and Danny each have some money. The amount of money Andy has is 1/3 of the total amount of money Betty, Candy and Danny have. The amount of money Betty has is 1/4 of the total amount of money Andy, Candy and Danny have. The amount of money Candy has is 1/5 of the total amount of money Andy, Betty and Danny have. If Danny has $1725, how much do they have altogether?

The amount of money Andy has is 1/3 of the total amount of money Betty, Candy and Danny means total $ in terms of ratio is 1+3=4.

The amount of money Betty has is 1/4 of the total amount of money Andy, Candy and Danny have means total $ in terms of ratio is 1+4=5.
The amount of money Candy has is 1/5 of the total amount of money Andy, Betty and Danny have means total $ in terms of ratio is 1+5=6.

LCM for 4,5,6 is 60.

A : B+C+D
1 : 3
15:45

B : A+C+D
1 : 4
12 : 48

C : A+B+D
1 : 5
10 : 50

D->(60-15-12-10) units=23 units

23 units = $1725
60 units = $4500
Total amount of money that they have altogether is $4500

starlight1968sg:

2) Tom and Jerry each has some money. If Tom spends $90 per day and Jerry spends $45 per day, Tom will have $1100 left when Jerry has spent all his money. If Tom spends $45 each day and Jerry spends $90 each day, Tom will have $1700 left when Jerry has spent all his money. How much did Jerry have?

Pls refer to this similar question from ACS(J)/ACS(P)2008 P6 Prelim Q41.Here's the http://prischoolmaths.blogspot.com/2009/06/maths-whole-number_7545.html. You should be able to figure it out and solve accordingly.
Hope the above clues are enough for you to start solving them while waiting for Mathsguru's solutions.

[firebird]

Dear mathsguru


Good evening.

Thank you very much for your answers. All of them are very clear.

With best regards
firebird

[ChiefKiasu]

mathsguru, just as a small token of our appreciation for the help you have rendered to our community, we award you 5000 KPs for you kind contributions!

[corneyAmber]

ChiefKiasu:

mathsguru, just as a small token of our appreciation for the help you have rendered to our community, we award you 5000 KPs for you kind contributions!

That is very nice indeed.. *clap clap clap*

[YLH88]

Hi Mathsguru, Coffeecat,


Thank you very much for the solution!!

[quote]ChiefKiasu wrote:
mathsguru, just as a small token of our appreciation for the help you have rendered to our community, we award you 5000 KPs for you kind contributions! [/quote]Congratulations, Mathsguru!!

[starlight1968sg]

Thanks Vanilla Cake for your help.

[Tiramisu Coco]

Hi mathsguru,


Need your help to solve this problem sum:

Roger had $186 more than Belinda. When he gave $20 to Belinda he still had three times as much money as she. How much did Roger have at first?

Thanks.

[small]

Tiramisu Coco:

Hi mathsguru,


Need your help to solve this problem sum:

Roger had $186 more than Belinda. When he gave $20 to Belinda he still had three times as much money as she. How much did Roger have at first?

Thanks.

Hi Tiramisu Coco,

Hope this helps.

http://www.postimage.org/image.php?v=Tsam0SJ

http://s2.postimage.org/am0SJ-18ffc60624acee8a1987811adf37b4e9.png\">

[chanpy]

Tagged as challenging question for P2 -


Mary baked 34 cupcakes for her friends. She packed 4 cupcakes into each bag. What is the greatest number of bags she needed to pack all the cupcakes?

What would be your answer - 8 or 9 bags?

The answer given by the teacher is 8 bags.

Appreciate advice on how to explain to kid.

TIA