Question

Students of class VI in a school were given a task to count the number of articles made of different materials in school. The information collected by them is represented as follows. Observe the pictograph and answer the following questions:
Which material is used in a minimum of articles?

Materials used	Articles = 20 articles
Wood
Glass
Metal
Rubber
Plastic

Answer 1

Hint: For solving this question you should know about the general knowledge of some aptitude mathematics. In this problem some boxes are given and the value of 4 boxes are given as 20 articles. So, we can find the value of a box from this and then we can find the values of all the boxes by comparing the values with a single box.

Complete step-by-step solution:
According to the question here a table is given to us of the observation of data collection by the students and then asked to find the maximum used material for them.
So, here it is given that 20 articles are equal to the below given boxes,

Here there are 4 boxes. So,
4 boxes = 20 articles
And 1 box = 5 article
And so, if we calculate all the materials using this, then we will get as follows:
1. Articles made from wood:

Here there are 6 boxes. So,
Total articles = $6\times 5=30$.
2. Articles made from glass:

Here there are 4 boxes. So,
Total articles = $4\times 5=20$.
3. Articles made from metal:

Here there are 10 boxes. So,
Total articles = $10\times 5=50$.
4. Articles made from rubber:

Here there are 5 boxes. So,
Total articles = $5\times 5=25$.
5. Articles made from plastic:

Here there are 7 boxes. So,
Total articles = $7\times 5=35$.
So, the total articles = 160.
And glass is used in a minimum number of articles.

Note: While solving these types of questions you can solve this without calculating the number of articles for every material used. You can just find the article for only one box and then count the number of boxes for them. And which have the maximum boxes that will be the answer for that.