The average height in a group of 200 persons is
170 cm. After one year, the height of some of them increased by 1
cm, and that of remaining
increased by 3 cm. The average height now became 171.4 cm. of
how many persons the height has increased by 3 cm? 1 - 40 ; 2 - 75 ; 3 - 50 ; 4 - 100
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1-40 is the answer Hope its help u mark it as a brainlist answer. and follow me also, rate this answer.
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