while walking through the market on holiday, you notice a small stand selling a camera and case set selling for £310. the merchant tells you that the camera costs £300 more than the case itself and that the case costs the price of the set minus the cost of the camera

 

you decide to buy just the case without the camera. you hand the merchant £100

 

how much change would you get back?????

nope, im stuck on this one

none

michelle just done it but guessed lol, i dont know the answer, its on her ds and i input your answer and it was wrong lol

£95 ;)

yup, £95 quid, how did you get to that then lol

Let camera value =cm £

let case value =cs £

let set value=s=310 £

let change value =c £

 

Eq 1 cm+cs =s

 

Eq 2 cm=300+cs

 

Eq3 cs=s-cm

 

substitute cs in Eq 2 with Eq3

 

cm=300+s-cm

2cm=300+s s=310

2cm=300+310

2cm=610

cm=305

 

cm+cs=s

cs=s-cm

from above

cs=310-305

cs=5

 

c=100-cs

c=100-5

c=95

 

Therfore change received is £95

Let camera value =cm £

let case value =cs £

let set value=s=310 £

let change value =c £

 

Eq 1 cm+cs =s

 

Eq 2 cm=300+cs

 

Eq3 cs=s-cm

 

substitute cs in Eq 2 with Eq3

 

cm=300+s-cm

2cm=300+s s=310

2cm=300+310

2cm=610

cm=305

 

cm+cs=s

cs=s-cm

from above

cs=310-305

cs=5

 

c=100-cs

c=100-5

c=95

 

Therfore change received is £95

looks like a recipe for cookies to me!!! mmmm cookies.......:tongue:

ooo if your baking i will have 1:)

 

I'm baking one right now mate.. oh you're talking about cookies :rofl:

Professor laytons mysteries on the DS there stella? Brilliant game i will be heading to get the new one when i get home:D! Completed the one your playing now.lol.

yup professor leighton lol, tis class

Yup, great game i think, i didnt want to put it down.lol.

Professor layton and pandoras box is out today, should be a great game also.

lol. Because it gets your head thinking to solve the puzzles.lol.

Can be frustrating but you collect coins and that allows you to get hints. Certainly worth playing.

I enjoyed it that much ive not bothered trading the first game in, keeping hold of it so i can do the puzzles again when ive forgotten them all.lol!!

Give us another one then.

lol. Its filled with other puzzles, not just word/math puzzles like that.

So im sure when he is stuck again he will put it up. Ill mibi have a play later and get some of the puzzles back up i had done for you chaps.

will sor a couple out for later