Question

in a mathematics sum of marks of ravan and Ramu is 30 and there marks differences is 10 find the marks of ramu​

Answer 1

Sum of Ravan And Ramu Marks=30

Let Ravan Get Marks=x

Let Ramu Get Marks=Y

Then ,

Their Sum =30

Means

x+Y=30

x=30-y

We got Value of x=30-y

Their Difference=10

Means

Means Ravan marks -Ramu Marks=10

x-y=10.

(x=30-y)

(30-y)-y=10

30-y-y=10

30-2y=10

30-10=2y

20=2y

Y=20/2

Y=10

Ramu get marks=Y=10 marks

Ravan Get marks=x=30-y=30-10=20 marks

Ramu=10 marks

Ravan=20 marks