Question

the total population of varud village in kolhapur district of Maharashtra is 5000.the number of males and females increases by 10% and 15% respectively and consequently the population of the village becomes 5700.what was the number of males in the village? ​

Answer 1

Answer:

Anticlockwise moment = 40gf × 40 cm

Clockwise moment = 80 gf × d cm

From the principle of moments,

Anticlockwise moment = Clockwise moment

40 gf × 40 cm = 80 gf × d

So, d = 40gf x 40/80 = 20cm to the righte of point O.

Answer 2

Answer:

step by step answer -

let's suppose X are M and Y are F

so, equation X + Y = 5000 (1)

then condition no 2 is that 10% of X and 15% of Y

then,

10X/100 + 15Y/100 = 5700

110x + 115Y = 570000 (2)

we got equation 1 and 2 now, equation 1 multiply by 115

then we get,

115X + 115Y = 115 × 5000 (3)

then substract the equation 3 by equation 2

[115X + 115Y] - [110X + 115Y] = 575000 - 570000

[115X + 115Y] - [110X + 115Y] = 575000 - 570000115X + 115Y - 110X - 115Y = 5000

[115X + 115Y] - [110X + 115Y] = 575000 - 570000115X + 115Y - 110X - 115Y = 5000115X - 110X = 5000

[115X + 115Y] - [110X + 115Y] = 575000 - 570000115X + 115Y - 110X - 115Y = 5000115X - 110X = 50005X = 5000

[115X + 115Y] - [110X + 115Y] = 575000 - 570000115X + 115Y - 110X - 115Y = 5000115X - 110X = 50005X = 5000X = 1000