Question

Fill in the boxes
[?] + [?]=14
[?] - [?]=10
|| ||
15 16

Answer 1

Answer:

Hope it helps you...✌✌

Answer 2

Answer:

The final value of the boxes are 1.5 , 12.5 , 13.5 , 3.5 respectively.

Step-by-step explanation:

Let as assume the boxes  have variable a, b, c, d as shown in the figure or image.

From the given figure we can generate four equations. They are,

$a+b=14$  

let this be equation 1.                

$a+c=15$              

let this be equation 2.

$b+d=16$            

let this be equation 3.

$c-d=10$                

let this be equation 4.

By subtracting equation 2 with equation 1 , we get

$c-b=1$                    

Let this be equation x.

By adding equation 3 and equation 4 , we get

$b+c=26$

let this be equation y.

Now by adding equation x and equation y , we get

$2c=27$

⇒$c=13.5$

By subtracting equation y with equation x , we get

$2b=25$

⇒$b=12.5$

Now by putting the value of b in equation 1 , we get

$a+12.5=14$

$a=1.5$

And by putting the value of c in equation 4 , we get

$13.5-d=10$

$d=3.5$

Hence the final value of the boxes are 1.5 , 12.5 , 13.5 , 3.5 respectively.

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