Quiz Discussion

A number x is mistakenly divided by 10 instead of being multiplied by 10. what is the percentage error in the result?

• 1] -99%
• 2] -100%
• 3] +99%
• 4] +100%

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

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

The average weight of a class of students is 67.5 kg. The weight of the class teacher is 25% more than the average weight of the class. The average weight of the class is less than the class teacher by x%. The value of x is:

• 1] 33.335
• 2] 25%
• 3] 20%
• 4] 22%

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%

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 cost of an article was Rs.75. The cost was first increased by 20% and later on it was reduced by 20%. The present cost of the article is:

• 1] Rs. 72
• 2] Rs. 60
• 3] Rs. 75
• 4] Rs. 76

In an election between two candidates, the winner got 65% of the total votes cast and won the election by a majority of 2748 votes. What is the total number of votes cast if no vote is declared invalid?

• 1] 8580
• 2] 8720
• 3] 9000
• 4] 9160

In the Science City, Kolkata the rate of the ticket is increased by 50% to increased the revenue but simultaneously 20% of the visitor decreased. What is percentage change in the revenue. if it is known that the Science city collects one revenue only from the visitors and it has no other financial supports:

• 1] +20%
• 2] -25%
• 3] +30%
• 4] -30%
• 5] Cannot determined

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