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 bus started from bustand at 8.00am, and after staying for 30 minutes at a destination, it returned back to the busstand. The destination is 27 miles from the busstand. The speed of the bus is 18mph. During the return journey bus travels with 50% faster speed.At what time does it return to the busstand?

0 Answers   Accenture,

in an cricket match the team has to score 8 runs from 3 balls,the crickets on the grease were at a:92;b:96,they must complete hundred in the match how?

17 Answers   Infosys,

In a certain code language DESERT is written RTSEDE. How will the word FAULTS the written in that code language? (a) TSULFA (b) AFLUST (c) LUAFST (d) UAFSTL (e) None of these

4 Answers  

What is the least number of squares marbles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?

0 Answers   Cap Gemini,

A school have 30% from MAHARASTRA .Out of this 20% from BOMBAY students. Find the total percentage of BOMBAY

12 Answers   Accenture, CMC,

In a family Reshma is elder sister of Ragini . Soni is Reshma's daughter and Saloni is Soni's cousin. Rgini's mother is Rajani. Ramani is the sister-inlaw of Reshma. Who is Soni's grandmother?

0 Answers   Wipro,

How many mashes are there in a sq. m of wire gauge. Each mesh being 8mm long X 5mm width

0 Answers   IIT Delhi,

A can swim & cross 50m(the length of swimming pool) in 2 min. B can swim & cross 50m in 2min 15sec. Every time when they meet a bell gong is struck. For 2000m how many bell sounds might be produced?

6 Answers   Accenture, CTS,

Express 16 m/s into Km/hr

0 Answers   Axis Bank,

If you could remove any of the 50 states, which state would it be and why?

6 Answers   i View, Microsoft,

Replace each letter by a digit. Each letter must be represented by the same digit and no beginning letter of a word can be 0. O N E O N E O N E O N E ------- T E N

1 Answers   Infosys,

A batsman scores 23 runs and increases his average from 15 to 16. Find the runs to be made if he wants top Inc the average to 18 in the same match.

0 Answers   Accenture,