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Problems Based on Application of Average in Everyday Life

What is the a...

Question

What is the average amount of money spent by Satish if he has spent ₹ 250, ₹ 350, ₹ 300 , ₹ 450 and ₹ 400 in 5 days?

A

₹ 375

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B

₹ 300

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C

₹ 350

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D

333.33

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Solution

The correct option is C
₹ 350

Average = $\frac{S u m o f o b s e r v a t i o n s}{N o . o f O b s e r v a t i o n s}$

= $\frac{250 + 350 + 300 + 450 + 400}{5}$

= $\frac{1750}{5}$

= ₹ 350

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What is the average amount of money spent by Satish if he has spent ₹ 250, ₹ 350, ₹ 300 , ₹ 450 and ₹ 400 in 5 days?

Q. A shopkeeper has recorded his earnings and expenditure for 5 working days as shown in the table. Calculate the average amount of profit he earns daily.

Earnings	$350	$300	$450	$300	$450
Expenditure	$180	$150	$270	$100	$300

Q. Draw a histogram to represent the following data:

Pocket money (in $R s$ )	$150 - 200$	$200 - 250$	$250 - 300$	$300 - 350$	$350 - 400$
Number of students	$10$	$5$	$7$	$4$	$3$

Q. The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city:

Expenditure (in rupees ) ( $x$ )	Frequency ( $f$ )	Expenditure (in rupees) ( $x_{i})$	Frequency ( $f_{i}$ )
$100 - 150$	$24$	$300 - 350$	$30$
$150 - 200$	$40$	$350 - 400$	$22$
$200 - 250$	$33$	$400 - 450$	$16$
$250 - 300$	$28$	$450 - 500$	$7$

Find the average expenditure (in rupees) per household.

Q. The mean of the following frequency distributed of

200

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. Find the value of

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Class	$100 - 150$	$150 - 200$	$200 - 250$	$250 - 300$	$300 - 350$	$350 - 400$	$400 - 450$	$400 - 450$	$500 - 550$
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Problems Based on Application of Average in Everyday Life

Standard VI Mathematics

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