In a quality control survey 4.5% of all parts of a machine were declared sub-standard. If there were 81 sub-standard parts, how many...

      

In a quality control survey 4.5% of all parts of a machine were declared sub-standard. If there were 81 sub-standard parts, how many parts were analysed?

  

Answers


John
4.5%=81
100%=?
Cross and multiply
81×100/4.5=1800 machines were analysed

Jonmhumble answered the question on October 28, 2017 at 08:36

John
50-35=15
%increase=increase/original number×100
15/35×100=42.86%
Jonmhumble answered the question on October 28, 2017 at 08:40


Next:  The price of yogurt rose from sh. 35 to sh. 50.what was the percentage increase in price?
Previous:  What percentage is 0.002 cm?

View More Mathematics Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions