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

English

Gujarati

Hindi

4.Average

medium

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

Share

Similar Questions

David obtained $76,65,82,67$ and $85 \,marks$ (out of $100$ ) in English, Mathematics, Physics, Chemistry and Biology. What is his average $marks$ ?

easy

Three years ago the average age of a family of $5$ members was $27\, years.$ On addition of a child to the family, the present average age of the family is still $27 \,years.$ Find out the present age of the child. (in $years$)

easy

On $24^{\text {th }}$ May, 2008 the maximum temperature of Delhi, Kollkata and Mumbai were recorded as $35^{\circ} C$, $33^{\circ}$ and $34^{\circ} C$ respectively. What was the maximum temperature of Chennai so that the average maximum temperature of those cities would be $35^{\circ} C$ (in $^{\circ} C$ )

medium

The average weight of three boys $A, B$ and $C$ is $54 \frac{1}{3} \,kg,$ while the average weight of three boys $B , D$ and $E$ is $53 \,kg .$ What is the average weight of $A , B , C , D$ and $E$ ?(in $kg$)

medium

The average age of $30$ girls is $1\, year.$ The average of first $18$ girls is $15\, year.$ Find out the average age of remaining $12$ girls?

medium