Question

Explain how to make a bar diagram to find 30% of 450, then find the answer. Make sure to include the number of segments and the values that would go in each.

Answer 1

Answer: $135$

Step-by-step explanation:

In the bar diagram,

We have a 10 box grid in which every grid is of 10 %,

⇒ The whole grid shows 100 %,

Here, the given number is 450,

Thus, we can write,

$100\% = 450$

$1\% = \frac{450}{100}=4.5$

$30\% = 30\times 4.5 = 135$

⇒ 30 % of 450 is 135.

Answer 2

Answer:

Separate the diagram into 10 segments, so they each represent 10%. Write 45 in each of the ten segments in the bottom row. The first 3 columns represent 30%, so multiplying 3 times 45 you get the answer of 135.