Unit I. Finding Enult A washing machine company makes two types of washing machines . Top - loaded and Front - loaded machines At the end of the daily production , the washing machines are tested and those with faults are removed and sent for repair The following table shows the average number of washing machines of each type that are made per day , and the average percentage of faulty machines per day Machine Type Average number of machines made per day 1000 Average percentage of faulty machines per day 2 % Top lowed machine Frootloaded machine 2000 2.5 % Question : What is the average number of faulty machines produced by the company in a day ? ( a ) 60 ( 6 ) 65 ( c ) 70 ( d ) 75 Question 2 Shubhi predicts that if there is a batch of 100 Top loaded machines , exactly 2 will be faulty Is Shubhi's prediction correct or incorrect ?
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(i) 65
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The average faulty machines produced by the company in a day are (b) 65.
Explanation:
- The average number of top load washing machines produced by the company in a day are 1000 machines.
- The average number of faulty top load machines is 2%. 2% of 1000 is 20 machines. The number of faulty top load machines are 20.
- The average number of front load washing machines produced by a company are 2000.
- The average number of faulty machines produced in a day are 2.5%. The number of faulty front load machines in a day is 45.
- Therefor the number of faulty machines produced in a day are 20+45= 65.
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