In a nursery class of 18 pupils, the average is
2 answers:
Answer:
The sum of the age of pupils is 81
Step-by-step explanation:
Let sum of age of 18pupils = x
Average ages = 4.5
Average = total/no. of pupil
4.5 = x/18
x = 81
Answer:
The sum of the age of pupils is 81
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Answer:
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Step-by-step explanation:
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Answer:
b is the correct answer i know it is
The second one, 7 < x < 13
