For the following questions answer them individually
A certain sum of money, when invested at a certain rate of simple interest, amounts to Rs 1,102 in 2 years and Rs 1,600 in 5 years. What is the principal amount (in Rs):
To do a certain work, the ratio of the efficiencies of A and B is 5 : 11. Working together, they can do the same work in $$27\frac{1}{2}$$ days. A and B work together for 20 days. C alone completes the remaining work in 18 days. C alone can do 75% of the original work in:
John sold a watch to Sue at a gain of 20%, and Sue sold it to Rima at a profit of 10%. If Rima paid ₹2,178 for it. how much did John pay (in ₹) for the watch?
The given bar graph represents the sales of automobiles (in ₹ crores) by five companies A, B, C, D and E in the years 2007-2008 and 2008-2009.
Study the bar graph and answer the question that follows.
(Note:The data shown below is only for mathematical exercise. It does not represent the actual figures of the companies)
What should have been the sales (in ₹ crores) of company E in 2008-2009 so that it would have shown the same increase over 2007-2008 as shown by the sales of automobiles of company C during these years?
One-third of a journey is covered at a rate of 40 km/h, one-fourth at the rate of 35 km/h, and the rest at the rate of 45 km/h. The average speed for the whole journey (in km/h) is:
P can do a piece of the work in 18 days and Q can do same work in 36 days. How long will they take (in days), if they work together, to complete the above mentioned work?
If three numbers are in the proportion of 1 : 3 : 4 and two times the sum of the numbers is 80, then the proportion of the squares of the numbers is:
An earthworm of length 18 cm is crawling along a certain path with a speed of 4 cm/s. An insect overtakes the earthworm in 6 s. How fast (in cm/s) is the insect walking? Assume that they both are walking along parallel paths.
The sum of the height and radius of the base of a solid right circular cylinder is 46 cm. If the total surface area of the solid cylinder is 6072 $$cm^{2}$$, what is the volume ( in $$cm^{3}$$) of the cylinder?
(Use $$\pi=\frac{22}{7}$$)
Study the given graph and answer the question that follows.
In how many years is the profit (Revenue - Expenditure) as a percentage of revenue, more than 28%?