Q&A - P3 Math

[Dharma]

raysusan:

please help me on this Qns


jean's age was 3/4 lily's age 20 years ago. jean's age was 7/9 lily's age 16 years ago. how old is lily now??

TIA :?:

20 yrs ago
Diff in age = 4u – 3u = 1u

16 yrs ago
Diff in age = 9p – 7p = 2p
Difference in age between 2 persons is always the SAME.
1u = 2p
3u + 4 = 7p
6p + 4 = 7p
1p = 4
Jane’s age now = 9p + 16 = 36 + 16 = 52 yrs old

[ozora]

hi wonder anyone could help me with these problems?

1) A group of 24 children sold some tickets for a charity show. Each ticket was sold at $5. Each boy sold 5 tickets while each girl sold 3 tickets. The boyus collected $40 more than the girls.
a) How many girls were there in the group?
b) how many tickets were sold together?

2) 30 pupils shared a box of sweets. Each girl received 4 sweets and eeach boy received 5 sweets. If the girl received 30 more sweets than the boys, how many girls were there?
I made assumption that all are boys and used value * unit. but i got stuck.
anyone can help?

[tianzhu]

Hi ozora


There is a similar type of question found on page 71 of this thread.

There are 44 cars & bicycles.
There are 128 more car wheels than bicycles.
How many car and bicycle are there?

It may help you to answer your questions.

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=149&start=700

Best wishes

[ozora]

tianzhu:

Hi ozora


There is a similar type of question found on page 71 of this thread.

There are 44 cars & bicycles.
There are 128 more car wheels than bicycles.
How many car and bicycle are there?

It may help you to answer your questions.

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=149&start=700

Best wishes

thanks. I realised my mistakes and got the answers. cheers

[Champion]

Need help with the P3 Maths Q - sorry if this Q has been asked before but my mind not working :?: :?:


Mary has $12 less than Jane and $18 less than Irene.
They have a total of $102 altogether.
How much does Mary have?

How to I draw model on this type of Q? :thankyou: :thankyou:

[teh_oh]

Champion:

Need help with the P3 Maths Q - sorry if this Q has been asked before but my mind not working :?: :?:


Mary has $12 less than Jane and $18 less than Irene.
They have a total of $102 altogether.
How much does Mary have?

How to I draw model on this type of Q? :thankyou: :thankyou:

Hi Champion,
http://i51.tinypic.com/2mpgznl.jpg\">

[Champion]

teh_oh:

Champion:

Need help with the P3 Maths Q - sorry if this Q has been asked before but my mind not working :?: :?:


Mary has $12 less than Jane and $18 less than Irene.
They have a total of $102 altogether.
How much does Mary have?

How to I draw model on this type of Q? :thankyou: :thankyou:

Hi Champion,
http://i51.tinypic.com/2mpgznl.jpg\">

:thankyou: teh_oh! :salute: :hugs: Long time \"No See you around\" :snuggles:

[Champion]

ksi:

http://i55.tinypic.com/33dbgih.jpg\">

:thankyou: Ah Po! :hugs: :snuggles:

[corneyAmber]

Champion, the answer is $24 right? When I check backwards, I get the following>


Jane $12 more than Mary = $24+12 = $36
Mary $18 less than Irene => Irene = 24+18 = $42

Total = $ (24 + 36 + 42 ) = $102 Correct?


If Mary -> $30
Jane -> $42 and Irene -> $48
Total = $(30+42+48) = $120

tio bo?

[teh_oh]

Hi Champion,

Long time no see.
I think ksi's answer is correct. Mine has typo error at the working; '102' mis-type into '120'. Had gotten child to check my model, but didn't get him to check my working. :oops: sorry.