Tutor MathsGuru: Ask me for your burning Maths questions!

[Dharma]

Hifive:

Hi Dharma


Thanks! Have a nice day!

No worries. You have a nice day too!

[powforhighschool]

Thank you that helped alot.

[powforhighschool]

1.the average cost of a 1990 car depreciates linearly, so that in 1993, the average cost of the car was $14,500 and in 1995 the average cost of the car was $12,700. Let y represent the year and c represent the aerage cost of the car in a linear function. Determine the anticipated cost of the sports car in 1996.


2. A local radio station is holding a contest to give away cash. THe announcer makes a telephone call, and if the person who answers guesses the correct amount of money to be given away, he or she wins the money. If the person misses, $20 is added to the jackpot. At the beginning of the 5th call, the jackpot was $240. On what call could the winner receive $1060

[Muffins]

powforhighschool:

1.the average cost of a 1990 car depreciates linearly, so that in 1993, the average cost of the car was $14,500 and in 1995 the average cost of the car was $12,700. Let y represent the year and c represent the average cost of the car in a linear function. Determine the anticipated cost of the sports car in 1996.


2. A local radio station is holding a contest to give away cash. THe announcer makes a telephone call, and if the person who answers guesses the correct amount of money to be given away, he or she wins the money. If the person misses, $20 is added to the jackpot. At the beginning of the 5th call, the jackpot was $240. On what call could the winner receive $1060

Hi.

Q1: $11800

Q2: the 45th call

[powforhighschool]

I got the answer to the 2nd question as the 46th caller, can you explain how you got the 45th caller Muffins?

[iFruit]

powforhighschool:

1.the average cost of a 1990 car depreciates linearly, so that in 1993, the average cost of the car was $14,500 and in 1995 the average cost of the car was $12,700. Let y represent the year and c represent the aerage cost of the car in a linear function. Determine the anticipated cost of the sports car in 1996.


2. A local radio station is holding a contest to give away cash. THe announcer makes a telephone call, and if the person who answers guesses the correct amount of money to be given away, he or she wins the money. If the person misses, $20 is added to the jackpot. At the beginning of the 5th call, the jackpot was $240. On what call could the winner receive $1060

1) Depreciation per year = (14500 - 12700)/2 = 1800/2 = 900

Cost of car in 1996 = cost of car in 1995 - depreciation = 12700 - 900 = 11800

2) 1060 = 240 + (n-5)20

820/20 = n-5

n = 46.

On 46th call, the winner could receive $1060.

[tiger262]

This thread has benefitted so many PSLE students and parents. It will be most useful if such a thread continues to support Sec-1 Maths also.


I am sure all those who wrote PSLE this year will be glad to have such a thread next year also, as they pursue Sec-1. Does it already exist in this forum? Or will anyone be kind enough to start such a ‘Sec-1 thread’ soon?

Thanks and regards.

[Muffins]

hi tiger262, there is a lready one


http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=8315&start=50

[tiger262]

Muffins:

hi tiger262, there is a lready one


http://www.kiasuparents.com/kiasu/forum/viewtopic.php?t=8315&start=50

Thank you very much Muffins.

I think something should be done to make that thread come alive. Hope next year it will blossom with more active participation from both parents and Sec-1 students.

[Muffins]

yah. i'm cruising around there as well