Hi iwork and Solver,Thank you for the idea and the solution.My daughter was able to do derive using guess and check. But her Tr. adviced to use some other methods.

Thank you so much for the support. :thankyou:

Ok. Thank you.

Hi Solver,

The first two steps are understandable.
On third step why we need to find the difference and the time is calculated based on that speed.

Thank u,
DNLNMUM.

Dear KiasuParents,

Hope u guys can help on the below sec 1 question.The below question is from Mathematics text book. Much appreciate if u guys are able to answer it.

Farhan cycles the first part of a 150-km journey at an average speed of 35km/h and he walks the remaining distance at an average speed of 5km/h. If he takes 4.5 hours for his entire journey, find the distance that he cycles.

Thank u in Advance,
DNLNMUM

Dear parents,

pls help on the below question.

On Friday, shirts in a shop were sold at $30. On Saturday, a discount was given on all shirts, and the number of shirts sold increased by 20%. The total amount of money collected increased by 14%.
(a) What was the price of a shirt sold on Saturday?
(b) What was the percentage discount given for each shirt on Saturday?
Ans : (a)$28.50 (b)5%

Thanks,
DNLNMum.

Friday
Price $30
Number 100%
Amount 100%

Saturday
Number 120%
Amount 114%

Price = Amount / Number
= 114/120 x $30
= $28.50

a) The price of a shirt sold on Saturday was $28.50.

30 - 28.50 = 1.50

1.50/30 x 100% = 5%

b) The percentage discount given for each shirt on Saturday was 5%.

Hi KangKangteo, Thank you for the fast reply.

Dear parents,

pls help on the below question.

On Friday, shirts in a shop were sold at $30. On Saturday, a discount was given on all shirts, and the number of shirts sold increased by 20%. The total amount of money collected increased by 14%.
(a) What was the price of a shirt sold on Saturday?
(b) What was the percentage discount given for each shirt on Saturday?
Ans : (a)$28.50 (b)5%

Thanks,
DNLNMum.

Hi,

Can anyone help on the below question. Thanks in advance.

http://i61.tinypic.com/14e1dgp.png\">

Hi DNLNMum,

Let's try:

http://i60.tinypic.com/6rm2ib.png\">

(Y) - (X) = 13.5 cm sq

(Y + Z) - (X + Z) = 13.5 cm sq

(1/2 x 7 x 9) - (X + Z) = 13.5 cm sq

(31.5) - (X + Z) = 13.5 cm sq

(31.5) - 13.5 cm sq = (X + Z)

(X + Z) = 18 cm sq

18 = 9 x 2

Length of AB is 2 cm


Hope this helps

Cheers




speedmaths
.

SpeedMaths, Thank you so much for such a fast reply.

http://www.kiasuparents.com/kiasu/forum ... p=1378213#

Hi,

Can anyone help on the below question. Thanks in advance.

[IMG]http://i61.tinypic.com/14e1dgp.png[/IMG]