Hans made 247 for 13 hours of work.

At the same rate, how much would he make for 18 hours of work?

To find out how much Hans would make for 18 hours of work, we can set up a proportion.

Let x be the amount he would make for 18 hours of work.

We can set up the proportion:
247 / 13 = x / 18

To solve for x, we can cross-multiply:
13x = 247 * 18

Multiplying:
13x = 4446

Dividing both sides by 13:
x = 342

Hans would make $342 for 18 hours of work.