Question

2) If there are 10 people in a trip then the average
height of all is 160 cm, but if 8 people go in the trip then
the average height reduces by 1 cm. find the average
height of remaining two?
(a)160 cm (b) 164 cm
(c) 155 cm
(d) 170 cm (e) 164.5 cm​

Answer 1

Answer:

b

Explanation:

let the total height of 10 people be x

x/10=160

x=1600cm

let the total height of 8 people be y

y/8=159

y=1272cm

total height of remaining 2 people

x-y

1600-1272

328cm

average=328/2

=164cm

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