This is so easy to get right...or wrong...

[ChrisV]

Why is it not 70?

Juice is 10
Burger is 5
Fries are 2
5+2x10 is 70.

Or 25.

 

[slowmotion]

I'm still holding out for brackets before making a revised answer. Then I'll reach for my trusty Hewlett Packard Reverse Polish Notation calculator.

Continue playing with your fluffy toys, kids.

 

[Slick]

It is 70.

 

[Tim Hall]

"multiplication takes preference over addition" - what does that mean? (Maybe I'm still wrong.)

You do any multiplication before addition. And don't do the operations left to right. For example 2 + 3 × 10 = 32. It's 3 multiplied by 10 then add 2. It's not 2 plus 3 = 5 times 10 giving 50.

 

[sight-pin]

Fries are 1p

 

[potsy]

60

 

[ChrisV]

No they aren't.

10 + 10 + 10 = 30.
10 + 5 + 5 = 20.
5 + 2 + 2 = 9.

 

[ChrisV]

So

5 + 2 x 10 = 70.

 

[winjim]

So

5 + 2 x 10 = 70.

No.

5 + 2 × 10 = 5 + (2 × 10)
= 5 + 20
= 25

Which isn't the correct answer.

​

 

[jefmcg]

No.

5 + 2 × 10 = 5 + (2 × 10)
= 5 + 20
= 25

Which isn't the correct answer.

​

yes it is.
To quote someone on this thread

Show your working

 

[ChrisV]

(5+2) x 10

70

 

[swee'pea99]

You do any multiplication before addition. And don't do the operations left to right. For example 2 + 3 × 10 = 32. It's 3 multiplied by 10 then add 2. It's not 2 plus 3 = 5 times 10 giving 50.

So, I am still wrong. Well there's a surprise.

 

[jefmcg]

(5+2) x 10

70

BODMAS

 

[Tim Hall]

No they aren't.

10 + 10 + 10 = 30.
10 + 5 + 5 = 20.
5 + 2 + 2 = 9.

Now look at the third line again ( the one where the answer is 9) and compare it with the fourth .

 

[ChrisV]

It's 25.

Multiplication first, then addition.

So 5 + (2x10) = 5 + 20 = 25.

That is the answer. Like my post and close the thread.