<prompt> A normal healthy child has a height of 100 cm and weighs 16 kg. What is his most likely age___3 years4 years5 years6 years  <response>: Height doubles by 4 yrs .Since length at bih is 50 cm . Height becomes 100 cm by 4 yrs. Weight 2y 8 16 by Weech formula for 1 to 6 yrs. So y 16-82 824 yrs Reference: GHAI Essential pediatrics, 8th edition 