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Question
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
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.
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