For better understanding see this : https://aptitude.gateoverflow.in/4169/cat1995-151

Aptitude Overflow

+2 votes

The following table gives data of some students. However, some data has been spoilt and cannot be read on the computer floppy

It is also known that:

1. Half the students were either excellent or good.

2. 40% of the students were females

3. One-third of the male students were average. Based on the above answer the following questions.

What proportion of good students are male?

- $0$
- $0.73$
- $0.4$
- $1.0$

0 votes

Performance | Total | |||
---|---|---|---|---|

Average | Good | Excellent | ||

Male | $\color{blue}{16}$ | $\color{blue}{22}$ | 10 | $\color{blue}{48}$ |

Female | $\color{blue}{(40-16) = 24}$ | $\color{blue}{8}$ | -- | 32 |

Total | $\color{blue}{40}$ | 30 | $\color{blue}{10}$ | $\color{blue}{80}$ |

$\color{green}{\text{The proportion of good male students :}}$$\color{orange}{\dfrac{22}{30} = 0.73}$

2,818 questions

1,221 answers

480 comments

40,251 users