Question
The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm, calculate the mean height of the 20 boys.
Answers
Arfa
161*20+14=x
161*34= x. 5474cm=x
14*15=2114cm
5474-2114=3360
Height of boys = 168 cm
161*34= x. 5474cm=x
14*15=2114cm
5474-2114=3360
Height of boys = 168 cm
Steph
The Total height of 34 children = 161 x 34 = 5474 cm. Height of 14 girls =
14 x 151 = 2114-5474 heightt of 20 boys = 3360/20 mean heightt of boys
= 168.
14 x 151 = 2114-5474 heightt of 20 boys = 3360/20 mean heightt of boys
= 168.
aqib
TOTAL HEIGHT OF 34 childrens=
Rayyan
161×20+14=x
5474=x
14×15=2114
5474-2114=3360
Take mean of 3360
Answer=168cm.
5474=x
14×15=2114
5474-2114=3360
Take mean of 3360
Answer=168cm.