Give the unknown quantity the name n.
A ratio of is not the same as a ratio of The students in three batches in school is in the ratio of Divide Rs. Here b is called the Mean Proportional and is equal to the square root of the product of a and c.
The total number of students in the three before the increase was, A. Examples for Direct Variation: Distance and Time are in Direct Variation, because more the distance travelled, the time taken will be more if speed remains the same.
Average Rate of Speed The average rate of speed for a trip is the total distance traveled divided by the total time of the trip.