Can u buy potato,rice , flour etc. without measuring weights?

 The Weighing level

In our daily life we buy vegetables from markets . 

Suppose we want 1kg potatoes then how do we measure it.

Of  course from measuring weights. So a measuring Weight of 1 kg can easily balance my potatoes.

But suppose we don't have weights still needs 1kg potatoes  to be measured we are given something  like the image above

This question is really interesting

As it  wants to test  that 

'Are we better than a vegetable seller or he is the champion in weighing thing'.??

So...

Can you balance the two circles ?

Sol. Below

Let's take S,C,T & H for

 square ,circle,triangle & hexagon respectively

Acc. To

First equation

 S + C = T + H  --> 1

Second equation

2H + 2S = 2T ---> 2

  

Multiplying equation 1 by 2

We get 

2S + 2C = 2T + 2H----> 3

Now subtracting equation 2 from 3

   2S + 2C= 2T + 2H

(-) 2H + 2S = 2T

___________________

2C - 2H = 2H

=>

2C = 4H

So the answer for image given above is 

4 Hexagons.

Ans : 4 hexagons

If you're able to do the above problem without solution  then you can easily buy 1kg potato & make a curry but if not stay hungry...