A can do a piece of work in 8 days. The efficiency of B is half the efficiency of A, and the efficiency of C is 50% more than the efficiency of B. If all the three work together, what part of the work will they finish in 2 days?
\(\frac{3}{8}\)
\(\frac{3}{4}\)
\(\frac{9}{32}\)
\(\frac{9}{16}\)
The value of
is:
\(\frac{19}{6}\)
\(\frac{17}{12}\)
\(\frac{41}{24}\)
\(\frac{31}{18}\)
A rectangular plot is 420 m long and 84 m wide. It is surrounded by semi-circular flower beds along all its sides. The area of the entire plot (in hectares) is x. The value of x (correct to one decimal place) is (take \( \pi = \frac{22}{7} \)):
:
Study the given pie chart and answer the question that follows:
The pie chart shows the break-up of the total number of employees of a company in 2019, in five departments A, B, C, D, and E.
Total number of employees=4500.
If the ratio of male employees to female employees in department A is 3 : 4, then the number of employees in department C is what percentage more than the number of female employees in department A (nearest to an integer)?
The value of \(\frac{\frac{1}{4} \div \frac{3}{4} \left(\frac{2}{5} - \frac{1}{3}\right)}{1\frac{2}{3} \text{ of } \frac{3}{4} - \frac{1}{4} \text{ of } \frac{2}{3}}\) is:
\(\frac{8}{195}\)
\(\frac{60}{13}\)
\(\frac{7}{195}\)
\(\frac{2}{195}\)
Study the given data and answer the question that follows.
| Marks | 0 to 10 | 10 to 20 | 20 to 30 | 30 to 40 | 40 to 50 |
| Number of students | 3 | 18 | 5 | 7 | 16 |