Question

If þ= 3n-2 , q=
2n-3 and p/q=5/4
then the value of n is.​

Answer 1

Answer:

p is equal to -3n-2

q is equal to 2n-3

p/q =5/4

so...

3n-2/2n-3=5/4

2n-3=5----1

3n-2=4----2

2n-3=5

2n=8

n=4

3n-2=4

3n=6

n=2

Answer 2

Let the cost of a notebook to be = ₹ x

Let the cost of a pen to be = ₹ y

According to the question,

The cost of a notebook is twice the cost of a pen.

i.e., Cost of a notebook = 2×Cost of a pen

x = 2×y

x = 2y

x-2y = 0

x-2y = 0 is the linear equation in two variables to represent the statement ‘The cost of a notebook is twice the cost of a pen’.