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.

An Arithmetic Problem for TJ/AOS/SSAT/SHSAT/ACT Prep. (Easy). Target Time. 15-25 seconds.

John wants to purchase a smartphone at 40% discount from the marked (bar code) price. He walks into a store with a 20% off coupon. By what additional percent additional discount the price of the phone must be reduced (through negotiation) so that John, a math wiz, obtains a net discount of 40% from the marked price?