The given pie-chart depicts the percentage of students coming to school using different modes of transport. Total number of students = 1300

In the given pie-chart, the percentage difference between students coming by car or bus to coming by walking or cycling.

Five years ago, the ratio of the ages of a father and his son was 5 : 3. Which ofthe following cannotbethe ratio of their ages 10 years from now?

If 12 men can do a job in 7 days, what fraction of the job can be done by one man in one day?

A train takes 3 hours less time for a journey of 360 km, if its speed is increased by 10 km/hr from its usual speed. What is its increased speed (in km/hr)?

A frog was, at the bottom of a 80 m deep well. It attempted to come outof it by jumping. In each jumpit covered 1.15 m but slipped down by 0.75 m. The number ofjumpsafter which it would out of the well is: