# Can you solve this puzzle? [closed] This puzzle is listed on Twitter here.

## closed as off-topic by Sid, w l, Mea Culpa Nay, Wen1now, ChowzenJun 26 '18 at 11:46

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• Welcome to Puzzling and thanks for posting the link where you found it (this is required but new users often forget it). – Glorfindel Jun 26 '18 at 7:32
• Please note that the twin blue balloons direction is different others – Jawhari Jun 26 '18 at 7:43
• Do we assume that 2 blue/green balloons = 2x1 balloon? That can be a 4th and 5th independant symbol – Saeïdryl Jun 26 '18 at 7:45
• On the second row, the two sets of green are different. Is this significant? – Kami Jun 26 '18 at 10:02

## 3 Answers

First line: 3 red balloons = 30 -> red = 10.
Second line: 10 + 4 green balloons = 18 -> green = 2.
Third line: 4 - 2 blue balloons = 2 -> blue = 1.
Final answer: 1 + 10 x 2 = 21.

• Please note that the twin blue balloons direction is different others – Jawhari Jun 26 '18 at 7:43
• I don't think that matters; if it does, there is not enough information to solve the equation. – Glorfindel Jun 26 '18 at 7:47

Let's replace baloons by variables because I prefer math than party

• red baloon = x
• green baloon = y
• blue baloon = z

we got :

• x + x + x = 30
• x + 2y + 2y = 18
• 2y - 2z = 2
• z + x * y = ??

given the first equation:

3x = 30
x = 10

the second equation is now:

10 + 4y = 18
4y = 8
y = 2

the third equation is know:

4 - 2z = 2
-2z = -2
z = 1

So, the last equation is:

z + x * y = ??
1 + 10 * 2 = ??
1 + 20 = ??

the solution is

21

• Please note that the twin blue balloons direction is different others – Jawhari Jun 26 '18 at 7:43
• @Jawhari that's the exact reason why I like variable-based equations but hate ballon-based, fruits-based or whatever-based equations... – Kepotx Jun 26 '18 at 7:46
• also, the two green baloons have not the same colour, does that means it's two different baloons? – Kepotx Jun 26 '18 at 7:47

Suppose red balloon = x

So, x + x + x = 30
=> x = 10

Suppose green balloon = y

So, x + 2*y + 2*y = 18
=> 10 + 4*y = 18
=> y = 2

Suppose blue balloon = z

So, 2*y - 2*z = 2
=> 4 - 2z = 2
=> z = 1

Now,

z + x * y = 1 + 10 * 2 = 1 + 20 = 21