Q&A - PSLE Math

[P.047330KH]

Dear tianzhu , thanks a lot for your quick reply … It was really helpful . 

[Vanilla Cake]

ck123:

Hi

Can someone confirm the answer for nan hua 2011 prelim maths paper 2 question 14? Answer given 34 seats my answer 39 seats if I am wrong please help to show the workings thanks.

For the benefit of interested readers who have no access to Nan Hua 2011 P6 Prelim Maths exam paper, here's the paper 2 Q14 while waiting reply from KSP members to confirm the correct answer:

A train has a capacity of 154 seats. Tickets for seats are sold at $8 and $12. There are 1/5 more $8-seats than $12-seats on the train. During a trip, the amount collected from the sales of $8 tickets was twice the amount collected from the $12 tickets. The total amount collected was $540. How many $8-seats were not taken during the trip?

VC's mum

[andante]

ck123:

Hi

Can someone confirm the answer for nan hua 2011 prelim maths paper 2 question 14? Answer given 34 seats my answer 39 seats if I am wrong please help to show the workings thanks.

Hi,
The answer given for my nan hua paper is 39 and my DD also worked out as 39.

[ck123]

Hi andante


Thanks for confirming.
:thankyou:

[ozora]

Mr Lee bought some shirts for $425. if He was given a discount of 15%, he would be able to buy 5 more shirts for the same amount of money. What is the original price of shirt?

is it equate 85%=>425
100% -> 500?
then how?

[raghupavithra]

it takes Mr Adams 20 minutes to saw a pole into 5 equal pieces how many minutes would it take him to saw another similar pole into 10 equal pieces?



how to solve this/

[zsqchx]

Could someone help me to solve Q.27 for Henry Park prelim 2011 paper1? Thank you.

[raghupavithra]

kasey needed to make120 bows for prize giving.she used 12.4 cm to make a bow.she bought 3 rolls of ribbon,each 5 m long.find the lenghth of the ribbon she had left.


how to solve this

[Vanilla Cake]

ozora:

Mr Lee bought some shirts for $425. if He was given a discount of 15%, he would be able to buy 5 more shirts for the same amount of money. What is the original price of shirt?

The original question reads:

Mr Lee bought some T-shirts for $425. If he was given a discount of 15%, he would be able to buy 5 more identical T-shirts for the same amount of money. What was the original price of each T-shirt?

This question had been discussed over http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=48&t=14433&p=582309. It's from ACS (P/J) 2011 P6 Prelim Maths Paper 2 Q9 - 3marks. When you work backwards and check, the number of T-shirt is not a whole number.

Discount of 15% could buy 5 more T-shirts
Amount spent on the T-shirts = $425 -> 100%
1% -> $425/100 = $4.25
15% -> $4.25x15 = $63.75
So, 5 more T-shirts after 15% discount -> $63.75
1 T-shirt after 15% discount -> $63.75/5 = $12.75
means 85% -> $12.75
1 T-shirt before 15% discount aka original price -> $12.75/85x100= $15.00

[Vanilla Cake]

zsqchx:

Could someone help me to solve Q.27 for Henry Park prelim 2011 paper1? Thank you.

Pls refer to http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=48&t=14433&p=582309 for the worked solution.