In a proportion, the second and the third terms are called .

_____ is the distance travelled by the object per unit time.

If $6:x::3:2$, then $x=$_____.

If the cost of $8$ books is $₹40$, then the cost of $15$ such books will be $₹$_____.

$0.6\%$ of $3000$ is equal to _____.

If the four given quantities are in proportion, then the product of _____ terms is equal to the product of means.

If $8$ bananas cost of $₹64$, then the cost of $1$ dozen bananas is:

If $p,q,r,s$ are in proportion, then 

The ratio of number of sides of rectangle to the number of sides of triangle is ___.