Oliver starts with a collection of bricks in which the combined number of blue and green bricks is odd. Explain why he cannot end up with a combined number of blue and green bricks that is even.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
![Oliver got frustrated sometimes with his somewhat limited set of red,
blue, and green building bricks. Part way through a project, he often ran
out of bricks of one particular colour. So he invented some 3D printing
machines that transform a brick of one colour into a combination of
bricks of one or more colours. Each machine can also operate in reverse.
The red machine (R) converts 1 red brick (r) into 1 blue brick (b) and 1
green brick (g). This process and its reverse are represented by
R-1
→ r.
and bg
R
r
bg
Similarly, for the blue machine (B) we have
B
b
→ rg
and
rg
→ b.
And for the green machine (G) we have
G-1
→ rb
and
rb
→ g.
The machines can be used on collections of bricks, performing one con-
version at a time. For example, 3 blue bricks can be converted into 1
red and 3 green bricks in three steps, as follows:
G-1
→ rggg
B
B
bbb > rgbb P→ rgrgb](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff203ec0d-4227-4680-a954-45ea9364deba%2Fbb3175ec-1e89-41df-ab1b-e9fa4c930686%2Fgavp7f_processed.jpeg&w=3840&q=75)
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