A bathtub holds 80 gallons of water. Water drains out of the tub at a rate of 2 gallons every thirty seconds. At this rate, how many minutes will it take a full bathtub to drain completely?

Given :

A bathtub holds 80 gallons of water.

Water drains out of the tub at a rate of 2 gallons every thirty seconds.

To Find :

How many minutes will it take a full bathtub to drain completely.

Solution :

We know, 30 seconds = 0.5 minute.

Rate of water flow per minute is given by :

Let, bathtub will completely drain in x minutes.

So, 4x = 80

x = 80/4

x = 20 minutes

Hence, this is the required solution.

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have