Tutor MathsGuru: Ask me for your burning Maths questions!

[Herbie]

Hi Pineapple,


Ans shld be 7x 100m= 700m

[Dharma]

Lynn1967:

talk_aboutstudies:

[quote]Is there a method where i can solve all speed questions like this:


A car and a van were travelling in opposite directions at speeds of 80km/h and 60km/h respectively. The car was travelling from Town A to Town B while the Van was travelling form Town B to Town A. At what time would the pass each other?


Note: No distance is given

Please help!

Time = Distance / (80 + 60) = Distance / 140

This is the same as assuming car speed is 140km/h and the time taken to travel from town A to B.

I understand this but what's the answer?[/quote]You’ll never be able to find out the meeting time of the car and van because the distance between the 2 towns is not given!

[pineapple tarts]

Herbie:

Hi Pineapple,


Ans shld be 7x 100m= 700m

That is also my answer but the teacher mark wrong w/o giving a solution. So I also dunno why & how to explain to my DD :?

[Lynn1967]

Dharma:

You’ll never be able to find out the meeting time of the car and van because the distance between the 2 towns is not given!

Huh?? So what is the purpose of this question then? :?

[NormalDistribution]

Perhaps the poster just wants to know the general method of solving such types of questions, and so did not specify the distance.

[peterch]

Please help me on this P4 math question.


Q:
3 Similar oven toasters and 4 similar kettles cost $120
2 such oven toasters and 1 such kettle cost $95
Find the cost of an oven toaster.


Thanks and sorry if this question ever been discussed earlier.

Regards

[Dharma]

peterch:

Please help me on this P4 math question.


Q:
3 Similar oven toasters and 4 similar kettles cost $120
2 such oven toasters and 1 such kettle cost $95
Find the cost of an oven toaster.


Thanks and sorry if this question ever been discussed earlier.

Regards

just add up the 2 equations ... U get 5 toasters + 5 kettles = $ 215
1 toaster + 1 kettle = $43
1 toaster = $95 - $43 = $52

[ruyu]

Dharma:

peterch:

Please help me on this P4 math question.


Q:
3 Similar oven toasters and 4 similar kettles cost $120
2 such oven toasters and 1 such kettle cost $95
Find the cost of an oven toaster.


Thanks and sorry if this question ever been discussed earlier.

Regards

just add up the 2 equations ... U get 5 toasters + 5 kettles = $ 215
1 toaster + 1 kettle = $43
1 toaster = $95 - $43 = $52

hard for them to understand use this

3 toaster oven +4 kettle =$120
2 toaster oven +1 kettle =$95

we can change the kettles in both the workings to be the same

8 toaster oven+4 kettle = $380

If we minus the total cost of 3 toaster oven and 4 kettles from 8 toaster oven and 4 kettle we get the cost of 5 toaster ovens.

5 toaster oven+0 kettle = $260

5 toaster ovens = $260
1 toaster oven = $52

Hope it help!

[Cheerfuldad]

Hi all,


P5 question:
At a party, Mrs Ong gave each pupil 5 nuggets and had 30 nuggets left. If she gave each pupil 6 nuggets, she would have 4 nuggets left. How many nuggets did Mrs Ong prepare for the party? :?

TIA

[ruyu]

Cheerfuldad:

Hi all,


P5 question:
At a party, Mrs Ong gave each pupil 5 nuggets and had 30 nuggets left. If she gave each pupil 6 nuggets, she would have 4 nuggets left. How many nuggets did Mrs Ong prepare for the party? :?

TIA

For the 5 nuggets start from 30 and continue by adding 5 nuggets

30,35,40,50,55

For the 6 nuggets start from 4 and continue by adding 6 nuggets

4,10,16,22,28,34,40,46

Than the common number between this two is 40 thus the answer is 40

Hope it helped


Best regard,

Ruyu