# Maths question - please help me help my son!!!

Discussion in 'Personal' started by pastychucker, May 22, 2011.

1. ### pastychucker

Can you please give me a hint to help me work out this question...I don't want the answer..just PLEASE give me some idea how to work out,PLEASE
For addressing envelopes Geraldine gets 10p per envelope plus &pound;2 per day
For addressing envelopes Bill gets 5p per envelope plus &pound;20 per day
One day they get paid the same for addressing the same number of envelopes - How many envelopes did they address?

2. ### bombaysapphireStar commenter

Let n be the number of envelopes they both address. It will be easier to work in pence for everything.
Geraldine gets 10n + 200
Bill gets 5n + 2000
These things are equal giving you an equation to solve for n.
What year is your son? Has he been taught to solve and equation with the unknown on both sides?

3. ### pastychucker

Bloody hell - he's Y9

4. ### bombaysapphireStar commenter

Lol! Does that mean no?
If you need help solving the equation then give me a shout but he might well have covered that by this stage of Year 9.

5. ### pastychucker

He says he doesn't get it...teenagers are so helpful...
So is it like 10 x n +200 =
5 x n + 2000 =
Sorry - its been a while since I did this stuff

6. ### ResourceFinder

Then the equation should be very straightforward for him

7. ### pastychucker

Further help would be appreciated..

8. ### ResourceFinder

G needs to make an extra £18 from envelopes

she makes an extra 5p for each envelope

How many 5p extras will make the £18?

HA!!!!

10. ### CarrieVLead commenter

5n+2000=10n+200 ( when they both earn the same)
subtract 5n from both sides
2000=5n+200
subtract 200 from both sides
1800=5n
n=360

( I hope!)

11. ### pastychucker

Thank you everyone...much appreciated.

12. ### bombaysapphireStar commenter

That's what I made it.

13. ### CarrieVLead commenter

Thank God for that! I had visions of making a complete idiot of myself

14. ### pastychucker

*Pastychucker hopes son's maths teacher isn't on tes...*

15. ### cyolba

Hmm, I'm sure I set my year 9s a question on envelopes for homework...

cyolba, obviously not teaching equations very well