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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