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Standard VIII

Mathematics

Increase and Decrease Percentage

What percent ...

Question

What percent of 160 m is 80 m ?

40%

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50%

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30%

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20%

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Solution

The correct option is A 50%
Required percent $= \frac{80 m}{160 m} \times 100 = 50$ %

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Similar questions

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90,

50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

Construct a frequency distribution table.

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80,

90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

How many students obtained marks below

40

The marks obtained by $40$ students of a class are given below :
$80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70,$
$10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90,$ $50, 80,$
$60, 70, 40, 50, 60, 90, 60, 40, 40, 60$ , and $60$

How many numbers are less than

35

Q. The table shows the distribution of the scores obtained by

160

shooters in a shooting competition. Use a graph sheet and draw an ogive for the distribution.

Scores	No. of shooters
$0 - 10$	$9$
$10 - 20$	$13$
$20 - 30$	$20$
$30 - 40$	$26$
$40 - 50$	$30$
$50 - 60$	$22$
$60 - 70$	$15$
$70 - 80$	$10$
$80 - 90$	$8$
$90 - 100$	$7$

Use your graph to estimate the median.

Q. Draw a histogram and frequency polygon to represent the following data.

Marks	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$	$80 - 90$	$90 - 100$
No. of Students	$12$	$22$	$35$	$40$	$60$	$52$	$40$	$30$	$5$

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What percent of 160 m is 80 m ?

The correct option is A 50%Required percent =80m160m×100=50 %

The correct option is A 50%
Required percent $= \frac{80 m}{160 m} \times 100 = 50$ %