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.

A Word Problem (Medium). Target Time

The design for a novel flubber Robot (with human touch) calls for its composition to be 24% metal, 12% ceramic, 32% plastic and 32% a special alloy. If assembly of 1 such robot calls for 6 Kg of ceramic, 1) how many Kg of plastic will be required, and 2) what will be the weight of a fully assembled robot?