Rashmi and Tina can do a piece of work in 20 and 30 days respectively. If they work at it on alternate days with Rashmi beginning, then, in ho many days will the work be over?
A swimmer swims downstream from point A to point B in 4 hours. It covers the same distance upstream in 5 hours. If the speed of the stream is 2km/h, what is the distance between A and B:
The average of the two numbers is 48. If 3 is added t a smaller number, then the ratio between them is 11:20. Find the large number. (Round up to two decimal places)
In a group of people, 70% are men and 30% are women. The average age of the men is 50 years and that of the women is 40 years. Find the average age of all the members in the group (in years)
A man and a boy can do a piece of work in 12 days. If the man works alone for the last 3 days, it is completed in 13 days. How long would the boy take to do it alone?
A train covers a distance with a speed of 72kmph in the first two hours of its journey and 120km in the next 1.5 hours. What is the average speed (in kmph, rounded off to the nearest integer) for the entire journey?
The grpah shows the production of tyres (in lakhs) by three different companies X, Y and Z over the years.
Directions: Study the following graph carefully and answer the questions given below it.
What is the % increase in production of company X from 2011 to 2012?
