For the following questions answer them individually
P can do $$^{1}/_{2}$$ of a work in 10 days and Q can do $$^{1}/_{5}$$ of the same work in 4 days. In how many days can both finish the work, working together?
A cube has sides that are 4 cm each, and the dimensions of a cuboid are $$2 cm{\times}3 cm{\times}4 cm$$. Find the positive difference between the volume of the cube and that of the cuboid .
Arun bought an old computer and spent ₹110 on its repairs. He then sold it to Bhola at a profit of 20%. Bhola sold it to Chandan at a loss of 10%. Chandan finally sold it for ₹1,188 at a profit of 10%. How much did Arun buy the computer for?
A goat is tied with a 10.5 m-long rope to one corner of a plot which is in the shape of an equilateral triangle each side of which is 16 m long. Find the area that the goat can graze on.
The ratio of the number of hens to the number of goats on farm A is 5: 4 and that on farm B is 5 : 7. What could be the ratio of the total number of hens to the total number of goats in farms A and B taken together?
The following bar graph shows the number of students who like four different colours.
Find the difference between the number of students who like yellow and those who liked blue .