Two springs of spring constant 280 N/m and 340 N/m are attached in series and compressed by a force equal to 24 N. How much is each compressed.

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When a force F is applied on a spring with a spring constant k Hooke's law gives the extent by which the spring is compressed as x where F = k*x or x = F/k.

If two springs are connected in series and a force F applied on them, the force applied is the same for both the springs. The resulting change in length varies.

In the problem, the two spring connected in series have a spring constant of 280 N/m and 340 N/m. When a force of 24 N is applied on the system each is compressed by a different length that is inversely proportional to its spring constant. The spring with a spring constant 280 N/m is compressed by 24/280 = 0.08571 m and the other spring with a spring constant 340 N/m is compressed by 24/340 = 0.0705 m.