The average of 10 numbers is 14.8. If two numbers 5 and 23 are replaced by 13 and 26 respectively, then what is the new average?
Given that average of 10 numbers is 14.8
$$\frac{sum\ of\ the\ numbers}{10}$$=14.8
sum of the numbers=148----(1)
Also given that two numbers 5 and 23 are replaced by 13 and 26
so we should add the value of 13-5=8 and 26-23=3 to the sum and find the average
=>$$\frac{\left(148+8+3\right)}{10}$$
=>159/10
=>15.9
hence answer is option A
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