Time to failure: A building that is subjected to shaking (caused, for example, by an earthquake) may collapse. Failure depends both on intensity and on duration of the shaking. If an intensity I1...

Time to failure: A building that is subjected to shaking (caused, for example, by an earthquake) may collapse. Failure depends both on intensity and on duration of the shaking. If an intensity I1 causes a building to collapse in t1 seconds, then an intensity I2 will cause the collapse in t2 seconds, where

If a certain building collapses in 30 seconds at one intensity, how long would it take the building to collapse at triple that intensity?