The SI Solutions Manual contains solutions to all 980+ practice problems in the Engineer-In-Training Reference Manual. Because you must solve nearly all the quantitative problems on the exam using SI (metric) units, getting comfortable working with SI units is crucial. _____________________________ Since 1975 more than 3 million people preparing for their engineering, surveying, architecture, LEED#65533;, interior design, and landscape architecture exams have entrusted their exam prep to PPI. For more information, visit us at www.ppi2pass.com.