Question

*If the sum of twelve marks is 510, what is their average?*

1️⃣ 51
2️⃣ 42.5
3️⃣ 52.5
4️⃣ none of these​

Answer 1

nht-ybqw-ebq

co de come

Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

If the sum of twelve marks is 510, what is their average

1. 51

2. 42.5

3. 52.5

4. none of these

EVALUATION

Here it is given that the sum of twelve marks is 510

The total number of observations = 12

Sum of the observations = 510

Hence the required average

$\displaystyle \sf{ = \frac{Sum \: of \: the \: observations }{Total \: number \: of \: observations } }$

$\displaystyle \sf{ = \frac{510}{12} }$

$= 42.5$

FINAL ANSWER

Hence the correct option is 2. 42.5

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