Let * be a binary operation, on the set of all non-zero real numbers, given by `a** b = (ab)/5` for all a,b∈ R-{0} that 2*(x*5)=10

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#### Solution

It is given that a*b=`(ab)/5`, where and

Using a*b= `(ab)/5 ` in the equation , we get:

2* `((5x)/5)=10` (∵ x*5=5x)

⇒2*x=10

`⇒(2x)/5=10`

⇒x=25

∴ The value of *x* is 25.

Concept: Concept of Binary Operations

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