Q&A - PSLE Math

[shell]

:thankyou: :thankyou: to everyone for the contributions. I highly recommend my friends and relatives to stop by here. This has been a wonderful resource corner.


cheerios,
Shell

[imacsg]

I also want to thank Mathizzzfun & Tianzhu, and many other contributors too for all the time taken to solve our math problems. Thank you, and Thank you.

[peach68]

Math paper finished, My son can solve all the questions. Thanks for this post where I got a lot questions for my son to practice. Thanks for all the contributors, Thank you!

[jjxy mum]

I am glad to find this site 2 weeks before the exam. Thank you Tianzhu for answering those questions posted by everyone. My son and I have benefits a lot through this forum.

[the5mate]

how was the test?

[verykiasumummy]

hi hi to all parents and students here...


visit this thread to poll for a \"like\" button to be implemented in ksp here...

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=1&t=41299

ur vote is much appreciated... sorry for the disruption though...

[jewelbox]

Once again, special thanks to Tianzhu and MathIzzzFun for your kindness, patience and untiring effort in helping us solve math qn one after another. It is very much appreciated. :thankyou: :thankyou: :thankyou:

[peggy]

Very special thanks to Tianzhu and Mathizzzfun as well as other contributors. Thanks for taking time to solve our questions. :grphug: Very much appreciated for sharing.

[mathnoobs]

tianzhu:

Robertpattinsonidle:

this question seriously mind boggling.



Both shops ABC and XYZ , offered a 15% discount for the same type of mattress. If Mr Muthu were to buy from shop XYZ ,he would have paid $38.25 less than the discounted price in shop ABC. a) What was the discounted price in the shop ABC ?
b) the original price of the mattress in Shop ABC was $1510. what was the minimum percentage discount it must offer so that the discounted price in shop ABC would be lower than the discounted price in Shop XYZ? Give your answer correct to the nearest percent.

Hi
This question has been discussed on page 837.

For (a)

15% ------- 38.25

100% ------- 255 (discounted price in ABC)

For (b)

In this case, we are working based on the given original price of $1510

Discounted price in ABC -------- 1510*0.85 ------ 1283.50

Discounted price in XYZ -------- 1283.50 – 38.25 ------- 1245.25

1510 – 1425.25 ------- 264.75

264.75/1510*100% ------- 18%

Best wishes

I've been pondering about this question, but I just can't understand this statement:
15% ------- 38.25

100% ------- 255 (discounted price in ABC)

the question states that the difference between XYZ and ABC's discounted price is $38.25.
The discount given by both shops were 15% each. How does one interpret that 15% = 38.25 ?

[MathIzzzFun]

mathnoobs:

tianzhu:

[quote=\"Robertpattinsonidle\"]this question seriously mind boggling.



Both shops ABC and XYZ , offered a 15% discount for the same type of mattress. If Mr Muthu were to buy from shop XYZ ,he would have paid $38.25 less than the discounted price in shop ABC. a) What was the discounted price in the shop ABC ?
b) the original price of the mattress in Shop ABC was $1510. what was the minimum percentage discount it must offer so that the discounted price in shop ABC would be lower than the discounted price in Shop XYZ? Give your answer correct to the nearest percent.

Hi
This question has been discussed on page 837.

For (a)

15% ------- 38.25

100% ------- 255 (discounted price in ABC)

For (b)

In this case, we are working based on the given original price of $1510

Discounted price in ABC -------- 1510*0.85 ------ 1283.50

Discounted price in XYZ -------- 1283.50 – 38.25 ------- 1245.25

1510 – 1425.25 ------- 264.75

264.75/1510*100% ------- 18%

Best wishes

I've been pondering about this question, but I just can't understand this statement:
15% ------- 38.25

100% ------- 255 (discounted price in ABC)

the question states that the difference between XYZ and ABC's discounted price is $38.25.
The discount given by both shops were 15% each. How does one interpret that 15% = 38.25 ?[/quote]hope this helps ...

http://i46.tinypic.com/e66jj6.png\">

So, for this question, 85% of the difference in discounted price = $38.25
Original difference in price (= A-B, in above model) is 38.25/0.85 = $45

cheers.