Exams

Let there be x one rupee coin, y 50 paise coin, z 25 paise coinx + y + z = 220......(i)

Total amount = 160

Now, x + (y/2) + z = 160 ......(ii)

⇒4x + 2y + z = 640

Thrice as many 1 re coin as 25 paise

⇒x = 3z ......(iii)

On solving equation (i), (ii) and (iii), we get

z = 40x= 3* 40 = 120y = 220 –(120 + 40 ) = 60

So, 50 paise coin =60

In biology, Homology is defined as any characteristic of biological organisms that is derived from a common ancestor. 

Hence, Homology is evidence of Common ancestry.

One atomic mass unit (AMU) is equal to the one-twelfth the mass of one carbon-12 atom.

The rate of change of velocity is called as Acceleration.

When moon's orbit is closest to earth is called as Perigee.

The distance between the Moon and Earth varies throughout the month and the year since the moon's orbit around the earth is elliptical. The distance is about 382,900 kilometers from the Moon's center to the center of Earth.

Hence, the point on the Moon's orbit closest to Earth is called the perigee.