For the following questions answer them individually
A alone can do a piece of work in 10 days. A and B together can do the same piece of work in $$\frac{20}{3}$$ days. A, B and C together can do the same piece of work in $$\frac{40}{7}$$ days. In how many days can B and C together do the same piece of work?
A train crosses a 900 metres long platform in 300 seconds. If the length of train is 600 metres. then in how much time does it cross a stationary pole?
The Bar graph given below presents the maximum temperature (in $$^\circ$$ C) of a city for 10 different days spread over several months.
What is the average maximum temperature of the city per day for the given ten days?
A travels a certain distance with three different speeds; first 3 km with a speed of 9 km/h, second 6 km with a speed of 15 km/h, and third 9 km with a speed of 18 km/h. What is the average speed of A for the whole journey?
In 60 litres mixture of milk and water, the ratio of volumes of milk and water is 3 : 2. If we want the ratio of the volumes of milk and water to be 1 : 1, then how much water should be added to the mixture?
A sold an article for ₹1495 at a profit of 15%. He purchased another article having cost price equal to the previous article. He sold this new article at a profit of 10%. How much total profit has A earned?
The average age of a group of 36 students is 23 years. Four students with average age 22 years leave the group. What is the average age in years (correct up to one decimal place) of the new group?
What is the value ofÂ
$$36 \div 8 \times 4 + 2 \div 4 - 1 + 5 of 3 \div (4 \times 2 - 3) - 3$$?