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We know that as the no. of artists will increase the time to complete the work will reduce.
So, the number of hours and number of artists are in inverse proportion.

So 48 × 15 = 30 × y (a1b1 = a2b2)
Therefore,

So, 24 artists will be required to make the statue in 30 hours.

Inversely Proportional

Now, what is an inverse proportion? So, two quantities, x and y would be inversely
proportional, if an increase in the value of x leads to a proportional decrease in the value of
y and vice versa. The speed and time of a journey is one example. The increase or
decrease in the proportion would be in such a manner that the corresponding values
happen to be constant.

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Daily life example

In the proper operation of a see-saw, as one side goes up, the other side goes down. Balance
scales and elevator counter-weights operate the same way.

The more money you spend, the less you have to save.

As you eat more of your favorite food you will have less to store for tomorrow.