The area can be found out by multiplying the length and the breadth and also by adding the boxes.
Mathematically,
(4+5+4+7)× 10
or
L×B = r + g + w + b
or
L×B = 3r + w
therefore
L×B is a multiplication expression.
Total number of boxes along the length = L= 20= 4+5+4+7
Total number of boxes along the breadth= B= 10
Total area or total number of boxes = L×B= 20×10=200
Total number of boxes= N= 200
Number of red boxes = r = 46
Number of green boxes = g = 46
Number of blue boxes = b = 46
Number of white boxes= w= 62
Mathematically,
N= r+ g + w + b
but r = g = b
therefore
N= 3r + w
N= r + g + w + b
L×B= N
or
L×B = r + g + w + b
L×B = 3r + w
A multiplication expression is one which has variables or numbers being multiplied.
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