Answer / nila

m f


m=2(f-15)

f= 5(m-45)= 5m-225

m=2(5m-225)-30
m=10m-480
9m=480
m=53.3
approximately 53

Answer / kermit rose

Let the number of males be given the name M.
Let the number of females be given the name F.

If 15 females are absent, then M will be twice that of
present females.
This means that M = 2 * (F - 15)

M = 2 * F - 30.

or 2 * F - M = 30.

Now if in addition to the 15 females being absent, we also
have 45 males being absent,

then this gives the equation,

(F - 15) = 5 * (M - 45)

which simplifies to

F - 15 = 5 * M - 225

5 * M - F = 210

Pulling the equations together, we get

5 * M - F = 210
-M + 2 * F = 30

Multiply the first equation by 2, and keep the second
equation as is.

10 * M - 2 * F = 420
- M + 2 * F = 30

Add the equations.

9 * M = 450

M = 50

Verify answer.
Calculate F
from - M + 2 * F = 30
-50 + 2 * F = 30
2 * F = 30 + 50
F = 40.

If 15 females are absent, then number of males will be twice
that of females.
40 - 15 = 25.
50 = 2 * 25. Confirmed.

If also 45 males were absent, then female strength would be
5 times that of males.
Female strength is 25 due to the 15 females being absent.

50 - 45 = 5.
25 = 5 * 5. Confirmed.

Answer / srv

F-15=2M. (1)
5(M-45)=F (2)
Putting value of F in equation (1) we get
5M-225-15=2M
-240= -3M
M=80

Putting vale of M in equation (2) we get
F=5(80-45)
F=5*35
F=175

Answer / kermit rose

Let the number of males be given the name M.
Let the number of females be given the name F.

If 15 females are absent, then M will be twice that of
present females.
This means that M = 2 * (F - 15)

M = 2 * F - 30.

or 2 * F - M = 30.

Now if have 45 males being absent,

then this gives the equation,

F = 5 * (M - 45)= 5 m - 225


which simplifies to

F = 5 * M - 225

5 * M - F = 225

Pulling the equations together, we get

5 * M - F = 225
-M + 2 * F = 30

Multiply the first equation by 2, and keep the second
equation as is.

10 * M - 2 * F = 450
- M + 2 * F = 30

Add the equations.

9 * M = 480

M = 480/9 is not an integer.


The question is not well stated.

In order to get an integral answer, the question should have been stated as:


1) In a club there are certain no. of males and females. If
15 females are absent then no. of males will be twice that
of females. If 15 females and 45 males are absent then female strength will be 5 times that of males. Find no. of males actually present.
In this form of the question the number of females will be 40 and the number of males will be 50.
(40 - 15) = 25 and 50 = 2 * 25

(50 - 45) * 5 = (40 - 15)

Answer / khalid usman

m = 2*(f-15) -> equ I

f - 15 = 5*(m-45) -> equ II

=> f = 5*(m-45) + 15

=> m = 2*((5*(m-45)+15)-15)

=> m = 2*(5m - 225 +15 - 15)

=> m = 2*(5m-225)

=> m = 10m - 450

=> 9m = 450

=> m = 50

so from equation II

f - 15 = 5*(m - 45)

=> f - 15 = 5*(50-45)

=> f - 15 = 5*(5)

=> f = 25 + 15

f = 40


so originally there are 40 females 50 males in club.

Answer / dhruv

let no of male=X
and no of female=Y
now according to question,
2(Y-15)=X;
and
5(X-45)=Y;
after solving the two equations we get,
X=53;
Y=40;

Answer / guest

30 males

Answer / mathi

m f


m=2(f-15)

f= 5(m-45)

m=2(5(m-45))
m= 2(5m-225)
m= 10m -450
9m=450
m=50

a survey of 250 ppl found that 223 have tatoos,178 wore leather,158 own harry davidson,151 wore tatoo and leather,119 wore leather and own harley,142 have tatoo and a harley, 103 have all the 3 items.draw a venn diagram n explain how many a)had only harley davidson? b)had atleast 2 of the 3 items? c) had none of the items? d)had tatoos or were wearing leather? e)were not wearing leather but did have tatoos and did own a harley? f)did not own a harley but did have tattoos or were wearing leather?

1 Answers  

A bus started from bus stand at 8.00a m and after 30 min staying at destination, it returned back to the bus stand. The destination is 27 miles from the bus stand. The speed of the bus 50 percent fast speed. At what time it retur4ns to the bus stand

0 Answers   TCS,

If a man can swim downstream at 6kmph and upstream at 2kmph, his speed in still water is: It takes 30 days to fill a laboratory dish with bacteria. If the size of the bactiria doubles each day, how long did it take for the bactiria to fill one half of dish?

0 Answers   Wipro,

There are two trees in a lawn. One grows at a rate 3/5 of the other in 4 years. If the total growth of trees is 8 ft. What is the height of the smaller tree after 2 years

0 Answers  

Please send me the model qestion paper for Po at SBI Please .

1 Answers  

The crew of a rowing team of 8 members is to be chosen from 12 men (M1, M2, …., M12) and 8 women (W1, W2,…., W8), such that there are two rows, each row occupying one the two sides of the boat and that each side must have 4 members including at least one women. Further it is also known W1 and M7 must be selected for one of its sides while M2, M3 and M10 must be selected for other side. What is the number of ways in which rowing team can be arranged.

0 Answers   TCS,

0, 7, 26, 63, 124, __

4 Answers   Geometric Software, Godrej, Infosys,

5. if atlantic is found in atlantic ocean, india is found in indian ocean then which of the following cases are true

1 Answers   TCS,

sir i need placement paper of assurgent company

0 Answers  

a man is standing before a painting of a man and he says I have no bro and sis and his [painted picture] father is my father’s son?

0 Answers   TCS,

A Flight takes off at 2 A.M from northeast direction and travels for 11 hours to reach the destination which is in north west direction.Given the latitude and longitude of source and destination. Find the local time of destination when the flight reaches there?

0 Answers   Accenture, BSNL,

I am preparing for APSRTC Officers under training,i would like to know the syllabus for this post's written test also Suggest me the reference books for Managerial Aptitude, General Knowledge, General English. Kindly send reply to my mail id pulijalasrikanth@gmail.com

2 Answers   APSRTC,