For the following questions answer them individually
A certain sum of money becomes 4 times in 12 years when invested at simple interest. In how many years will it become 10 times of itself at the same rate?
The marks obtained by a student in Mathematics, Chemistry and Physics are, respectively, 195 out of 200, 133 out of 180 and 153 out of 160. His average score in per cent (correct to one decimal place) is:
A man borrowed money and paid back in two equal annual instalments of ₹1,089, at 10% compound interest compounded annually for 2 years. What was the sum (in ₹) borrowed?
The selling price of a chair is $$\frac{33}{20}$$ times its cost price. What is the gain or loss percentage in the transaction?
The given pie charts show the number of candidates who enrolled for a medical entrance examination in 2010, and those who qualified 1be examination in seven medical institutes of India. The total number of candidates who appeared for the entrance examination were 1,80,000, and those who qualified were 75,000. Study the charts carefully and answer the question that follows.
What is the ratio of the number of candidates who enrolled in institute A to the number of candidates who qualified in institute G?
Jack takes thrice as much time as Peter and twice as much as Justin to finish a work; working together they can finish the work in 15 days. The time (in days) Justin will take to finish the work alone is:
The numbers 8, 9, 11, 15, 17, 21 and N are arranged in ascending order. The mean of these numbers is equal to the median of the numbers. The value of N is:
Four solid cubes, each of volume 1728 $$cm^{3}$$, are kept in two rows having two cubes in each row. They form a rectangular solid with square base. The total surface area (in $$cm^{2}$$) of the resulting solid is:
Two similar cylindrical jugs have heights 5 cm and 8 cm, respectively. If the capacity of the smaller jug is 64 $$cm^{3}$$, what is the capacity ( correct to 2 decimal places, in $$cm^{3}$$) of the larger jug?
A can do a piece of work in 8 days while B alone can do it in 12 days. They work together for 4 days and the remaining work is completed by C alone in 2 days. They are paid ₹7,200 for the completion of the entire work. The earnings of A, B and C, respectively, are: