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The average height of Kamlesh, Bimla and Alok is 120 cm. If the average height of Kamlesh and Bimla is 125 cm. Find the height of Alok.1. 175 cm2. 110 cm3. 160 cm4. 135 cm |
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Answer» Correct Answer - Option 2 : 110 cm Given∶ Average height of Kamlesh, Bimla and Alok = 120 cm Average height of Kamlesh and Bimla = 125 cm Formula used∶ Average = Sum of all observations / Number of observations Calculation∶ (Kamlesh + Bimla + Alok) / 3 = 120 ⇒ Kamlesh + Bimla + Alok = 360 ...(1) (Kamlesh + Bimla) / 2 = 125 Kamlesh + Bimla = 250 ...(2) From (1) and (2) Alok + 250 = 360 ⇒ Alok = 110 ⇒ Alok’s height is 110 cm. |
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