Question

If 1/2+2/5s=s-3/4,what is the value of s?

A. s=3/4

B. s=25/12

C. s=-25/12

D. s=-3/4

Answer 1

b

Explanation:

Answer 2

Answer: The correct option is

(B)
`s=(25)/(12).`

Step-by-step explanation: We are given to find the value of s from the following equation :

`(1)/(2)+(2)/(5)s=s-(3)/(4)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)`

To find the value of s, we must solve the given equation.

The solution of equation (i) is as follows :

`(1)/(2)+(2)/(5)s=s-(3)/(4)\\\\\\\Rightarrow s-(2)/(5)s=(1)/(2)+(3)/(4)\\\\\\\Rightarrow (5-2)/(5)s=(2+3)/(4)\\\\\\\Rightarrow (3)/(5)s=(5)/(4)\\\\\\\Rightarrow s=(25)/(12).`

Thus, the required value of s is
`(25)/(12).`

Option (B) is CORRECT.