Question

1. One note book costs Tk. 32.50. How much will 15 notebooks cost ?
2. A train covers 810km in 9 hours. How far does it go in 1 hour?
3. The ages of 4 boys are 12 years, 13 years, 11 years and 14 years. What is the
average age of these boys ?

Answer 1

1 ans)32.50x15=487.5

2 ans)810÷9=90

3 ans) mean=sum of all variates ÷number of variates

Mean=(11+12+13+14)÷4

Mean=50÷4

Mean=12.5

Mean is also known as average

Answer 2

Answer:

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