Question

Question.
A student has to secure 15% marks to get through. If he gets 80 marks and fails by 70 marks, line
the maximum marks set for the examination.
(a) 900
(b) 1000
(c) 1200
(d) None of these
plz completely explain
​

Answer 1

Answer:
The maximum marks set for the examination =1000.

Step-by-step explanation:
As per the given data in the question,

We have to calculate the value of of the maximum marks set for the examination

As per the question,

It is given that,

A student has to secure 15% marks to get through.
As we know when we convert the percentage value in fraction then we need to divide it by 100.
So, 15% will be equal to /frac{15,100}
Now 15/100 the Minimum mark to pass the exam.
As per question,
he gets 80 marks and fails by 70 marks.
Therefore , the minimum mark is equal to 80+70=150.
Now we can calculate line
the maximum marks set for the examination.
Let us assume that the maximum marks is X.
That is /frac{150,X} will be equal to /frac{15,100}.
Now We can calculate X =(/frac{150,15})*100 = (/frac{15000,15})*100 = 1000
So , the value of X will be
equal to 1000.
Hence the value of
the maximum marks set for the examination =1000.

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Answer 2

The full marks is 1000.

• A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The proportion therefore refers to a component per hundred. Per 100 is what the word percent means. The word "percent" is used to symbolise it.
• There is no dimension to percentages. As a result, it is known as a dimensionless number. We must divide the value by the total value to find the percentage, and then multiply the resulting number by 100. The original number is subtracted from the new number, divided by the original number, then multiplied by 100 to get the % increase.

Here, according to the given information, we are given that,

A student has to secure 15% marks to get through.

Now, when the pass marks is 15, the full marks is 100.

When the pass marks is 1, the full marks is $\frac{100}{15}$.

When the pass mark is (80 + 70) = 150, the full marks is $\frac{100}{15}.150 = 1000$.

Hence, the full marks is 1000.

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