An optician's test card is fixed at 90 cm behind the eyes of a patient – InterviewSolution

1.	An optician's test card is fixed at 90 cm behind the eyes of a patient who looks into a plane mirror which is at 300 cm in front of him as shown in the Mirror Eye Test Card 90 cm 300 cm diagram. If the distance of eye from the image of card is (m x 230).Then what is the value of m?
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