The given bar graph shows the income and expense (in crores) of a company over 5 years, from 2014 to 2018.
Study the bar graph and answer the question that follows.
In which of the following years is the ratio of expenditure to income the minimum?
The following histogram shows the marks scored by 40 students in a test of 30 marks. A student has to score a minimum of 10 marks to pass the test. How many students have passed the test and obtained less than 50% of marks?