Quiz Discussion

In a factory there are three types of machine M1, M2 and M3 which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2%, 4% and 5% defective products, respectively. what is the percentage of non-defective products ?

• 1] 89%
• 2] 97.1%
• 3] 96.1%
• 4] 86.1%
• 5] None of these

Half percent, written as a decimal, is

• 1] 0.2
• 2] 0.02
• 3] 0.005
• 4] 0.05

The actual area of a rectangle is 60 Cm2, but while measuring its length a student decreases it by 20% and the breadth increases by 25%. The percentage error in area, calculated by the student is :

• 1] 5%
• 2] 15%
• 3] 20%
• 4] No change

An inspector rejects 0.08% of the meters as defective. How many will he examine to reject 2?

• 1]

  2000

• 2]

  2200

• 3]

  2500

• 4]

  2800

One bacterium splits into eight bacteria of the next generation. But due to environment, only 50% of one generation can produced the next generation. If the seventh generation number is 4096 million, what is the number in first generation?

• 1] 1 million
• 2] 2 million
• 3] 4 million
• 4] 8 million
• 5] None of these

If salary of X is 20% more than salary of Y, then by how much percentage is salary of Y less than X?

• 1]

  25

• 2]

  23

• 3]

  50/3

• 4]

  65/4

The population of a town increases every year by 4%. If its present population is 50,000, then after 2 years it will be

• 1] 53,900
• 2] 54,000
• 3] 54,080
• 4] 54,900

Narayan spends 30% of his income on education and 50% of the remaining on food. He gives Rs. 1000 as monthly rent and now has Rs. 1800 left with him. What is his monthly income?

• 1] Rs. 8000
• 2] Rs. 7000
• 3] Rs. 9000
• 4] Rs. 6000

The population of a town increased from 175000 to 262500 in a decade. The average percent increase of population per year is?

• 1]

  33.33%

• 2]

  5%

• 3]

  6%

• 4]

  8.75%

Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

• 1]

  57%

• 2]

  60%

• 3]

  65%

• 4]

  90%