Out of nine persons, eight persons spent Rs. ,30 each for their meals. ninth one spent Rs. ,20 more

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Out of nine persons, eight persons spent $Rs. \,30$ each for their meals. The ninth one spent $Rs. \,20$ more than the average expenditure of all the nine. The total money spent by all of them was (in $Rs.$)

A

$260$

B

$290$

C

$292.50$

D

$400.50$

Solution

Let the average Expenditure of nine person be $x$.

According to the question

$x=\frac{x+20+240}{9} \Rightarrow 9 x=x+260 \Rightarrow x=32.5$

$9x=292.5=$ Total Expenditure

Standard 13

Quantitative Aptitude

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