Question

If the value of Ef,x, = 225 and Ef, = 9, then the _
value of x is, where the symbols have their usual
meanings
(1) 22.5
(2) 15
(3) 19
(4) 25​

Answer 1

Ef,x=225

Ef=9

x=225÷Ef

x=225÷9

x=25

Hence, Answer is 4)25