Question

The pie-chart depicts the results of a survey conducted to identify the favourite juice of some
The mean of five numbers is 27. If one of the numbers is excluded. the mean gets reducted by 2.
CBSL - Maths
students
a) 150
Mango
Orange
752
135°
Others
Pineapple
How many students like orange juice, if the strength of the school is 720 ?
d) 240
b) 360
C) 180
What is the excluded number ?
a) 35
b) 27
C) 25
d) 40​

Answer 1

Answer:

Old mean=x/5=27

x=5*27=135

new mean=x/4=25

x=4*25=100

the required mean=135-100=35

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