Help needed for primary math Q!!!

[Thaiyotakamli]

Badmonton club in a school spent $681 to buy 50 t-shirts n shorts for its members. Each t-shirt cost $12 n each pair of short cost $15, how many t-shirt did the club buy?

 

Bros, help me with this math qn, my P4 cousin ask me n i dont know the answer lol

[Sosaria]

Badmonton club in a school spent $681 to buy 50 t-shirts n shorts for its members. Each t-shirt cost $12 n each pair of short cost $15, how many t-shirt did the club buy?

 

Bros, help me with this math qn, my P4 cousin ask me n i dont know the answer lol

 

???

 

You already said they "buy 50 t-shirts"... so why ask again how many t-shirts bought?? Question salah (wrong) lah...

 

Or you mean 50 total = t-shirts + shorts?? Some of these assessment book questions are very poorly phrased.

Edited January 28, 2012 by Sosaria

[Thaiyotakamli]

???

 

You already said they "buy 50 t-shirts"... so why ask again how many t-shirts bought?? Question salah (wrong) lah...

 

Or you mean 50 total = t-shirts + shorts?? Some of these assessment book questions are very poorly phrased.

Dont know le the qn ask so, i'm confused n took me 10 min try to figure it out but ans cant get still... By the way this is rulang primary hwk

 

Haiz nowaday Primary questions so hard

[Rainman]

Typical method

 

X+Y=50

12X+15Y=681

 

Logically it should buy one pair each for each member -> 681-50*(12+15) = still got some change to go mac donald.

[Kusje]

Primary school no algebra.

[Thaiyotakamli]

Think he havent taught algebra n primary 4 think no decimal yet ba

[I-LOVE-CARS]

Badmonton club in a school spent $681 to buy 50 t-shirts n shorts for its members. Each t-shirt cost $12 n each pair of short cost $15, how many t-shirt did the club buy?

 

Bros, help me with this math qn, my P4 cousin ask me n i dont know the answer lol

 

If u wan to find shots:

50x12=600 <Total amt spent on T-shirt>

681-600=81 <Total amt spent on shorts>

81/12=6.75 <Round off to 6 shots>

[Obscurest]

If u wan to find shots:

50x12=600 <Total amt spent on T-shirt>

681-600=81 <Total amt spent on shorts>

81/12=6.75 <Round off to 6 shots>

 

 

Bro..... Your ans is not correct

[Obscurest]

Badmonton club in a school spent $681 to buy 50 t-shirts n shorts for its members. Each t-shirt cost $12 n each pair of short cost $15, how many t-shirt did the club buy?

 

Bros, help me with this math qn, my P4 cousin ask me n i dont know the answer lol

 

 

Need to use tabulation method also known as "guess and check" method.

 

Example:

 

T-shirt..............Short............... Total

20.....................30

x$12..................x$15...............$690

 

 

19....

Edited January 28, 2012 by Obscurest

[Akari_ph]

T shirt = 23

short = 27

 

[Fondue]

Shorts cost $3 more than T-shirt. Total spent $681.

 

If both cost the same at 12, then 50 pcs will cost 12*50 = 600.

Balance 81.

Since each shorts cost extra $3, Divide 81 by 3= 27.

 

Therefore, T-shirt is 23, short is 27.

[Nightsky]

Shorts cost $3 more than T-shirt. Total spent $681.

 

If both cost the same at 12, then 50 pcs will cost 12*50 = 600.

Balance 81.

Since each shorts cost extra $3, Divide 81 by 3= 27.

 

Therefore, T-shirt is 23, short is 27.

 

Correct, supposition method!!

[JJ_JJ]

Bro,

 

I had written and published a book for such type of questions last year. In the school, children are taught the Guess & Check table to solve such problems. Visit my website ( exclusifmedia.com )

and you shall see some examples to help you decide on acquiring the book.

 

Hope you enjoy it!!

 

JJ_JJ

[Ruriimasu]

Shorts cost $3 more than T-shirt. Total spent $681.

 

If both cost the same at 12, then 50 pcs will cost 12*50 = 600.

Balance 81.

Since each shorts cost extra $3, Divide 81 by 3= 27.

 

Therefore, T-shirt is 23, short is 27.

 

ah... took me quite a few moments to understand what you mean.. DIE.. i think i will have a hard time with my kid's maths when the time comes

[Thaiyotakamli]

If u wan to find shots:

50x12=600 <Total amt spent on T-shirt>

681-600=81 <Total amt spent on shorts>

81/12=6.75 <Round off to 6 shots>

Think round off also wrong lol

[Thaiyotakamli]

Shorts cost $3 more than T-shirt. Total spent $681.

 

If both cost the same at 12, then 50 pcs will cost 12*50 = 600.

Balance 81.

Since each shorts cost extra $3, Divide 81 by 3= 27.

 

Therefore, T-shirt is 23, short is 27.

Oh ok i think i get it, thx bro!!!

[Sosaria]

Shorts cost $3 more than T-shirt. Total spent $681.

 

If both cost the same at 12, then 50 pcs will cost 12*50 = 600.

Balance 81.

Since each shorts cost extra $3, Divide 81 by 3= 27.

 

Therefore, T-shirt is 23, short is 27.

 

Wow, thanks! I was really thinking of how the "model method" taught at primary level can be used to solve this question, and you've shown the way.

 

I know the guess-and-check method, but it seems to be quite crude, so I'm surprised it's actually taught as an acceptable method. It's only good for those kids who can multiply and add quickly because of the number of cases they must check. And also the kid must know how to systematically converge to the solution, else they'd be just blindly guessing and wasting a lot of time.

[Headshok]

Wow, thanks! I was really thinking of how the "model method" taught at primary level can be used to solve this question, and you've shown the way.

 

I know the guess-and-check method, but it seems to be quite crude, so I'm surprised it's actually taught as an acceptable method. It's only good for those kids who can multiply and add quickly because of the number of cases they must check. And also the kid must know how to systematically converge to the solution, else they'd be just blindly guessing and wasting a lot of time.

 

i really wonder why they dont allow algebra.

 

its a more practical way and easier to understand and it can be applied when they hit secondary school.

 

this diagram or tikam method is a waste of time.