Question : In an office, 40% of the staff is female. 70% of the female and 50% of the male staff are married. The percentage of unmarried staff in the office is:

Option 1: 64

Option 2: 60

Option 3: 54

Option 4: 42

Question : Possible measures of the three angles of a triangle are:

Option 1: 33°, 42°, and 115°

Option 2: 40°, 70°, and 80°

Option 3: 30°, 60°, and 100°

Option 4: 50°, 60°, and 70°

Question : In an isosceles triangle, if the vertex angle is twice the sum of the base angle, then the measure of the half of the vertex angle of the triangle is:

Option 1: 60 

Option 2: 70 

Option 3: 80 

Option 4: 50

Question : In a city, 40% of the people are illiterate and 60% are poor. Among the rich, 10% are illiterate. The percentage of the illiterate poor population is:

Option 1: 36%

Option 2: 60%

Option 3: 40%

Option 4: 50%

Question : An article is sold at a certain price. If it is sold at $33 \frac{1}{3}$% of this price, there is a loss of $33 \frac{1}{3}$%. What is the percentage profit if the article is sold at 80% of its original selling price?

Option 1: 60%

Option 2: 50%

Option 3: 70%

Option 4: 40%

Question : $\Delta ABC$ and $\Delta DEF$ are two similar triangles and the perimeters of $\Delta ABC$ and $\Delta DEF$ are 90 cm and 54 cm respectively. If the length of DE = 36 cm, then the length of AB is: 

Option 1: 60 cm

Option 2: 40 cm

Option 3: 45 cm

Option 4: 50 cm