Question

A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is :
A) 285 B) 290 C) 297 D) 305

Answer 1

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☞ Your Answer is Option A

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$\huge\sf\blue{Given}$

✭ A library has an average of 510 visitors on Sunday and 240 on another days

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☆ Average number of visitors in a month (30 days)

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We know that the month will have 5 Sundays

So,

➢ The visitors on Sunday = $\sf 5× 510 = 2550$

And now the remaining days will be,

➠ $\sf 30-5 = 25 \ days$

Now the visitors on the other day will be,

➝ $\sf 25 × 240 = 6000$

So now the total visitors per month is,

➼ $\sf 2550 + 6000 = 8550$

Now the average,

➳ $\sf\dfrac{8550}{30}$

➳ $\sf\orange {Average = 285}$

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