A technical workshop produces two models of valves. A bulk order of units contains standard valves and the rest are precision valves. What percentage of the order is precision valves?

Answer and explanation

Correct answer: A.

  1. Step 1: Find the number of precision valves: . Calculate the percentage: . **Answer: . Why not the others:** is the ratio , would be 200 units, and is an arithmetic error.

Practise more Commercial Arithmetic, Applied Algebra, Geometry and Statistics.

Free questions with an explanation for every one, and full timed Poklicna matura (Vocational Matura Slovenia) mock tests.