tsiddique1972 tsiddique1972

08-11-2021
Mathematics

contestada

the mean height of 20 boys and 14 girls is 161 cm. if the mean height of the 14 girls is 151 cm. find the mean height of 20 boys

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thakshila2001 thakshila2001

08-11-2021

Answer:

Answer:171 cm

Step-by-step explanation:

161 = x +151/2

161*2 = x + 151

322 - 151 = 171

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