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BKB Senior Officer-2012

91. If (7a) (7b)= 7c/7d, what is d in terms of a, b, and c?

[BKB Senior Officer-2012 : 2012]

1. c/ab

2. c -a - b

3. a + b - c

4. c - ab

Answer

92. In January, the value of a stock increased by 25%, and in February,it decreased by 20%. How did the value of the stock at the end of February compare with its value at the beginning of January?

[BKB Senior Officer-2012 : 2012]

1. It was less

2. It was 5% greater

3. It was the same.

4. It cannot be determined from the information given.

Answer

93. The population of a country doubled every 10 years from 1960 to 1990. What was the percent increase in population during this time?

[BKB Senior Officer-2012 : 2012]

1. 200%

2. 300%

3. 700%

4. 800%

Answer

94. On a test consisting of 80 questions. Nasir answered 75% of the first 60 questions correctly. What percent of the other 20 questions does he need to answer correctly for his grade on the entire exam to be 80%?

[BKB Senior Officer-2012 : 2012]

1. 85%

2. 90%

3. 95%

4. 100%

Answer

95. A hospital has enough pills on hand to treat 10 patients for 14 days. How long will the pills last if there are 35 patients?

[BKB Senior Officer-2012 : 2012]

1. 7 days

2. 6 days

3. 5 days

4. 4 days

Answer