For the following questions answer them individually
If a certain sum at compound interest becomes 3 times in 4 years, then in how many years will it become 9 times, at the same rate of interest?
A train covers a distance of 275 km in $$2\frac{1}{2}$$ hours with a uniform speed. The time taken to cover a distance of 440 km with the same speed is:
The cost prices of two articles are in the ratio 4 : 5. While selling these articles, the shopkeeper gains 10% on one article and 20% profit on the other article, and the difference in the selling price is ₹480. Find the total cost price of both the articles.
A sum of ₹17,200 is lent out at simple interest in two parts for two years at 8% and 10% p.a., respectively. If the total interest received after two years is ₹3,008, then the money lent at 8% rate is:
The radii of the circular ends of a frustum of a cone are 20 cm and 13 cm and its height is 12 cm. What is the capacity (in litres) of the frustum (correct to one decimal place)? (Take $$\pi=\frac{22}{7}$$)
The perimeter of rectangular field is 386 m and the difference between its two adjacent sides is 95 m. The side of a square field, having the same area as that of the rectangle, is:
14 men complete a work in 18 days. If 21 men are employed, then the time required to complete the same work will be:
The value of $$\frac{2-(\frac{6}{7}of21+5.25)}{\frac{4}{3}of(15.8-3.4)+5\times2.39}$$ is:
Ramesh invested 30% more than Suresh. Suresh invested 40% less than Arm, who invested ₹8,000. The total amount invested by all of them together is:
