The bar graph shows average marks scored in a 100 marks Geography exam by students of 7 divisions of standard X. Study the diagram and answer the following questions.
What is the ratio of average marks scored by Division C to Division G?
If a person's income increases from Rs 20 lakhs per year to Rs 24 lakhs per year and tax increases from Rs 3,50,000 to Rs 4,00,000 the marginal tax rate is
A man, rowing a boat, covers a distance of 16 km in two hours downstream. He covers half the distance in same amount of time when rowing upstream. Calculate the speed of the stream.