TJ Prep Problems

TJ test prep practice problems  for our students and readers. The problems provide a very small sampling of what Optimal TJ Prep students work with.

TJ Prep - A Hard Three-Part Math Question. Target Time. 60 seconds.

Part 1. What is the % increase in the volume of a cube after each of its sides is tripled?

Part 2. What is the % increase in the volume of a tennis ball if its radius is doubled? 

Part 3. What is the % increase in the volume of a cylinder if its radius is multiplied by K and its height is multiplied by H?