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 \(27\tfrac{1}{2}\,\text{days}\) 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:
\(56\tfrac{1}{2}\,\text{days}\)
\(35\,\text{days}\)
\(33\,\text{days}\)
\(49\tfrac{1}{2}\,\text{days}\)
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:
\(\frac{5670}{187}\)
\(\frac{6750}{187}\)
\(\frac{6570}{187}\)
\(\frac{7560}{187}\)
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 cm², what is the volume (in cm³) of the cylinder?\(\text{(Use }\pi = \tfrac{22}{7}\text{)}\)
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%?