Explanation

1 bat: 140

3 bats: 420

5 bats: 700

Explanation

Let quantity of water to be added further be x litres.

Then, milk : water =                       40                           .

20 + x

Now,                     40                           =             1

20 + x    2

 20 + x = 80

 x = 60.

Quantity of water to be added = 60 litres.

Explanation

X/Y = 3/2 So X = 3Y/2

(X^2 + Y^2)/(X^2 - Y^2)

Now replace the X value from first equation

= [ (3Y/2)^2 + Y^2] / [ ((3Y/2)^2 - Y^2]

= [ (9Y^2/4) + Y^2] / [ (9Y^2/4) - Y^2]

= [ (9Y^2 + 4Y^2)/4] / [ (9Y^2 - 4Y^2)/4]

= (9Y^2 + 4Y^2) / (9Y^2 - 4Y^2)

= 13Y^2 / 5Y^2

= 13/5

Explanation

Let the original money be Rs.100,

then money spent on machinery = Rs. 35

Money spent on raw material = Rs. 40

Money spent on staff = Rs. 10

Money left = 100 - 85 = Rs. 15

If money left is Rs. 15, original money = 100

If money left is 60000, original money =10015×60000=400000

Hence the total money spent on machinery and raw material =400000×75%=Rs.300000

Explanation

 45 is the correct answer 

LCM(a,b) × HCF(a,b) = a × b LCM * HCF = One Number * Other Number 15 * 90 = 30 * Other number Hence, Other number = (90 * 15)/30 = 45

Explanation

To solve this problem, follow these steps:

1Determine the rate at which one boy assembles machines:

• 15 boys assemble 30 machines in 1 hour.
• Therefore, 1 boy assembles 30 machines/15  boys = 2 machines per hour

Calculate the number of machines 48 boys can assemble in 1 hour:

• Each boy assembles 2 machines per hour
• Therefore, 48 boys×2 machines per boy=96 machines per hour.

Find out how many machines can be assembled in 40 minutes:

40 minutes is  40/ 60 = 2/3of an hour.

Therefore, in 40 minutes, the number of machines assembled is:

96 machines per hour× 2/3of an hour=64 machines

Explanation

Explanation

Eject means expel.

Explanation

Rs 150 - Rs 120 = Rs 30 30/120 x 100 = 25%

. Solution for 30 is what percent of 120 100%/x%=120/30 (100/x)*x=(120/30)*x - we multiply both sides of the equation by x 100=4*x - we divide both sides of the equation by (4) to get x 100/4=x 25=x x=25 now we have: 30 is 25% of 120

Explanation

A polygon having 8 sides is called octagon 

A polygon having 10 sides is called decagon

A polygon having 4 sides is called quadrilateral