Answer :
The number of the blue marbles are in the box will be 102.
What is the solution of the equation?
The solution of the equation means the value of the unknown or variable.
A box contains 162 marbles which are either red (r) or blue (b).
r + b = 162 ...1
There are 42 more blue marbles than red marbles.
b = r + 42 ...2
Then from equation 1 and 2, we have
r + r + 42 = 162
2r = 120
r = 60
Then the number of blue marble will be
b = 60 + 42
b = 102
More about the solution of the equation link is given below.
https://brainly.com/question/545403
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