Question

Raju got social marks twice the marks he got in science. The ratio of social and Hindi marks=5:7. If the total marks he got in science, social and
Hindi=580 then find the marks he got in science, social and Hindi?​

Answer 1

Step-by-step explanation:

Hindi= 7x

social science = 5x

science= x

NOW

the sum of marks of Hindi social science and science =580

put them into the equation

= 7x+ x+ 5x = 580

= 13x = 580

= x = 580/13

= x = 44.61

science = 44.61

social science= 44.61*5

= 223.05

Hindi = 44.61* 7

= 312.67

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Answer 2

The marks in Science, social and Hindi are 100, 200 and 280 respectively.

• An equation is said to be linear if the maximum power of the variable is consistently 1. Another name for it is a one-degree equation. A linear equation with one variable has the conventional form Ax + B = 0. In this case, the variables x and A are variables, while B is a constant. A linear equation with two variables has the conventional form Ax + By = C.
• Each term in a linear equation has an exponent of 1, and when this algebraic equation is graphed, it always produces a straight line. It is called a "linear equation" for this reason.

According to the given information, we are given that,

Raju got social marks twice the marks he got in science.

Let the marks he got in science is x.

Then, his social marks is 2x.

Now, it is given that, the ratio of social and Hindi marks = 5:7.

Now, if he gets 5x and 7x in social and Hindi respectively,

His science marks must be $\frac{5x}{2}$.

Now, it is given that, the total marks he got in science, social and

Hindi = 580.

Then, 5x + 7x + $\frac{5x}{2}$ = 580.

Or, 29x = 1160.

Or, x = 40.

Then, 5x = 200, 7x = 280 and  $\frac{5x}{2}$ = 100.

Hence, the marks in Science, social and Hindi are 100, 200 and 280 respectively.

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