##
**Find the value of unknown in math puzzle / riddle:**

We have four equations & we
need to find the value of three unknown shapes: Triangle, Circle & Square. We
have three unknowns & we have been given four equations so it is easy to
find the values of unknown shapes & then put all values in the final
equation to calculate the expression.

**Find value of unknown in math puzzle**

Let’s get started:

###
**Given:**

####
**Equation 1: **

Triangle + Triangle + Triangle =
30

####
**Equation 2:**

Triangle + Circle + Circle = 20

####
**Equation 3:**

Circle + Square + Square = 13

###
**To find:**

####
**Equation 4:**

Triangle + Circle x Half Square =
?

###
**Solution:**

First Equation:

Triangle + Triangle + Triangle =
30

3 Triangle = 30

Triangle = 10

Second Equation:

Triangle + Circle + Circle = 20

Put value of triangle in above
equation.

10 + 2 Circle = 20

2 Circle = 10

Circle = 5

Equation 3:

Circle + Square + Square = 13

Put value of circle in above
equation.

5 + 2 Square = 13

2 Square = 8

Square = 4

Finding the value of unknown
expression:

Triangle + Circle x Half Square =
?

Putting values of Triangle, Circle
& Square in above equation:

10 + 5 X 4 / 2 = Answer

We need to solve this equation by
applying PEMDAS. Multiplication will be solved first.

10 + 20 / 2 = Answer

10 + 10 = Answer

Answer = 20

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