Question

please anyone solve these questions and if you do not know please don't answer useless answers otherwise I will report them ​

Answer 1

Step-by-step explanation:

11) no. of total valid votes=65*600000/100

=390000

12) new sides=20*120/100

=24

15*120/100

=18

new area=24*18

=432

increase in area=432-(20*15)

=132

increase in %=132*100/432

=30.5%

13) no.of girl failed in exam=60*1100/100

=660

no. of boys failed in exam=50*1400/100

=700

total student failed in exam=660+700

=1360

hope it help you

Answer 2

Answer:

Q11

The candidate received 358800 votes

Q12

There is 44% increase in area

Q13

54.4% candidates failed the examination

Step-by-step explanation:

Q11: Total number of votes = 6,00,000

Total number of invalid votes = 8% of 6,00,000

$= \frac{600000*8}{100} = 6000*8=48000 \ votes$

Total number of valid votes = 600000-48000 = 552000

Since candidate got 65% of total valid votes

number of votes received by the candidate = 65% of 552000

$= \frac{552000*65}{100} = 5520*65 = 358800 \ votes$

Therefore candidate received 3,58,800 votes

Q12: length of rectangle = 20 cm

breadth of rectangle = 15 cm

Area of initial rectangle($A_1$) = $20*15=300 cm^2$

length of rectangle after 20% increase =

$20 + \frac{20*20}{100} = 20 + 4=24cm$

breadth of rectangle after 20% increase =

$15 + \frac{15*20}{100} = 15+3=18cm$

Area of final rectangle($A_2$) =$24*18=432cm^2$

$percentage \ increase = \frac{increase}{initial} *100\\=\frac{A_2-A_1}{A_1}*100\\=\frac{432-300}{300}*100= \frac{132}{300}*100 = 44$

Therefore 44% increase

Q13: Total number of students = 2500

number of girls who appeared in examination = 1100

number of boys who appeared in examination = 2500-1100 = 1400

number of boys who passed = 50%

= $\frac{1400*50}{100} = 14*50 = 700$ boys

number of girls who passed = 40 %

= $\frac{1100*40}{100} = 11*40 = 440$ girls

Candidates who passed examination = 440 + 700 = 1140

Candidates who failed examination = 2500-1140 = 1360

Fail % = $\frac{1360}{2500}*100=54.4$ %

Therefore 54.4 % candidates failed