Question
What is the principal? I. The simple interest
obtained on the principal after 2 years at 16% rate of interest is Rs 140.8 less than the compound interest obtained on the same principal after 2 years at 16% per annum. II. The sum becomes double in 10 years at 6% per annum. III. The compound interest obtained on the principal is Rs 1,830.4 after 2 years at the rate of 8% compounded annually. In each of these questions, one question is given followed by by data in three statements I, II and III. You have to study the question and data in the statements and decide that the question can be answered with the data given in which of the statements and mark your answer accordingly. ÂSolution
From I Given D = 140.8 T = 2 years and rate = 16% ∴ D = PR²/((100)²) 140.8 = (P × 256)/(100  × 100) ∴ P = (140.4 × 100 × 100)/256 = Rs 55,000 From II We cannot find the exact amount of principal. From III CI = 3660.8 T = 2 years , rate = 16% We can find the principal from this statement easily. Hence, either statement I or statement III is sufficient to answer the question.Â
A spent 35% and 20% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 15% and 20% to his mother and brother, respec...
The population of a city is decreased by 12% in the first year and then increased by 22% in the second year. Find the population of the city at the end...
- If the price of a wheat bag is reduced by 25%, by what percentage should a family increase its consumption of wheat bags to ensure that their total expendi...
The income of a person is Rs.15000 and his expenditure is Rs.12000. In the next year his income and expenditure is increased by 8% and 13% respectively....
Monthly savings of X is 50% of his monthly income which is Rs. 9000. If ratio of monthly expenditure of Y and X is 15:8 respectively and monthly savings...
- 80% of a number is the same as 64% of another number. If their combined value is 360, find the difference of the numbers.
The sum of the monthly incomes of ‘A’, ‘B’ and ‘C’ is Rs. 90000 which is 4 times the monthly income of ‘C’. If ‘A’ spends 55% of his...
In a company, 45% of the workforce consists of females. The number of male employees exceeds that of females by 350. What is the equivalent of 40% of th...
In a factory, total number of workers (male + female) are 480. If the number of female workers is 40% more than the number of male workers in the factor...
40% of a neighborhood likes gardening and 60% likes DIY projects. If 25% enjoy both and the other 20 neighbors like neither, find the total number of ne...
Relevant for Exams:
