Mathematics: Post your doubts here!

[Danish Sardar]

Btw don't you think you have exagerrated this one like only 17% of the world solved this LoL !!
Solution:

Let the total pages= y
Percentage of pages used for selling cars= 25% of y = 0.25y
Remaining percentage= 100 - 25 = 75%
The percentage of remaining pages = 75% of y = 0.75y
62.5% of remaining pages = 0.75y x (62.5/100) = 0.46875y (Do not round this off if you want an accurate answer)
Pages for ads= 36

Therefore the equation becomes like this

0.25y + 0.46875y + 36 = y
0.71875y + 36 = y
Y - 0.71875y = 36
0.28125y=36
Y= (36/0.28125) = 128

Cheers ! I hope you'd get it !

Yeah man nice one

 

[Danish Sardar]

Btw don't you think you have exagerrated this one like only 17% of the world solved this LoL !!
Solution:

Let the total pages= y
Percentage of pages used for selling cars= 25% of y = 0.25y
Remaining percentage= 100 - 25 = 75%
The percentage of remaining pages = 75% of y = 0.75y
62.5% of remaining pages = 0.75y x (62.5/100) = 0.46875y (Do not round this off if you want an accurate answer)
Pages for ads= 36

Therefore the equation becomes like this

0.25y + 0.46875y + 36 = y
0.71875y + 36 = y
Y - 0.71875y = 36
0.28125y=36
Y= (36/0.28125) = 128

Cheers ! I hope you'd get it !

How did u get that 0.28125

 

[Mr.Physics]

How did u get that 0.28125

See there mate.
1y - 0.71875y=0.28125y

 

[husnain99]

How to calculate the answer of C -part 2 .?
Ans is 1 & 10 !

 

[Mr.Physics]

View attachment 58102
How to calculate the answer of C -part 2 .?
Ans is 1 & 10 !

husnain99

 

[husnain99]

husnain99

Thanks !
Btw how many past papers did you do for igcse phy , Chem , bio and maths ? ( from which year till which which year ?)

 

[Mr.Physics]

Thanks !
Btw how many past papers did you do for igcse phy , Chem , bio and maths ? ( from which year till which which year ?)

To be honest, I loved solving math papers. That'swhy I started from 1990s. Sounds crazy
For other subj that you have mentioned, I started from 2004 or 2005

 

[Mr.Physics]

Thanks !
Btw how many past papers did you do for igcse phy , Chem , bio and maths ? ( from which year till which which year ?)

No prob

 

[husnain99]

To be honest, I loved solving math papers. That'swhy I started from 1990s. Sounds crazy
For other subj that you have mentioned, I started from 2004 or 2005

All variants ?
Wow

 

[Mr.Physics]

All variants ?
Wow

Yeah mostly

 

[My Name]

question 2 part c ii of
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s03_qp_4.pdf
Explanation needed.Please and thank you!

 

[husnain99]

question 2 part c ii of
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s03_qp_4.pdf
Explanation needed.Please and thank you!

360 -(x-45)
x was 130 so ;
=360 -( 130-45)
=360-85
=275

 

[My Name]

360 -(x-45)
x was 130 so ;
=360 -( 130-45)
=360-85
=275

sorry I meant part i

 

[husnain99]

sorry I meant part i

225 ?
You were done with IGs , no ?

 

[Mr.Physics]

sorry I meant part i

The bearing of D from A is 090 so that angle in between is 45. Extend the line from C and that angle will be 45 too.
Bearing of A from C = 180 + 45 = 225°

 

[Mr.Physics]

225 ?
You were done with IGs , no ?

Maybe she wants to repeat Math in the upcoming session

 

[My Name]

225 ?
You were done with IGs , no ?

Yep that one.
Yes,I'm done with it.

The bearing of D from A is 090 so that angle in between is 45. Extend the line from C and that angle will be 45 too.
Bearing of A from C = 180 + 45 = 225°

Thanks!

Maybe she wants to repeat Math in the upcoming session

Haha no Alhamdulillah I'm not repeating anything.
Someone asked me to help out with this. Sadly I couldn't so that's why I'm here.

Thanks both!
Help is appreciated.

 

[Mr.Physics]

Yep that one.
Yes,I'm done with it.

Thanks!

Haha no Alhamdulillah I'm not repeating anything.
Someone asked me to help out with this. Sadly I couldn't so that's why I'm here.

Thanks both!
Help is appreciated.

Oh ok nevermind
My guesses mostly prove incorrect

 

[husnain99]

Mr.Physics approx how much days would be required to cover these IG maths topics ?
And which of the topics should I cover first ? ( chapters attached )

 

[Mr.Physics]

Mr.Physics approx how much days would be required to cover these IG maths topics ?
And which of the topics should I cover first ? ( chapters attached )

I would recommend you to learn the topics in this order. (Attached)
And InshAllah you'll finish all of em in a month or less.
And don't worry about that problem solving topic, it's really easy
The difficult topics among these are transformations, vectors and probability so they are gonna take most of your time.
Feel free to ask any more questions, I'll try my best to help