Question
The length and breadth of a rectangular field are
increased by 25% and 45%, respectively. If the original dimensions of the field are 60 m in length and 40 m in breadth, what is the percentage increase in the perimeter?Solution
Original perimeter of rectangular field = 2 × (60 + 40) = 200 m Increased length of rectangular field = 1.25 × 60 = 75 m Increased breadth of rectangular field = 1.45 × 40 = 58 m Increased perimeter of rectangular field = 2 × (75 + 58) = 266 m Required percentage increase = {(266 – 200)/200} × 100 = 33%
An army lost 20% its men in war, 20% of the remaining due to diseases and 20% of the rest were disabled. Thus, the strength was reduced to 64,000 active...
What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is ...
In a train, 45% of the passengers are females. Out of total number of passengers, 65% have unreserved tickets out of which 18% are females. How much per...
After increase in the price of coffee by 15%, a person is able to buy 3 kg less for Rs. 1,840. Find the original and increased price of the coffee per kg?
The value of A’s car is depreciating by 25% every year whereas the value of his house is appreciating by 15% each year as compared to the previous yea...
- The market value of a laptop falls by 8% in the first year and 15% in the second year. If the value after two years is Rs. 19,320, find the original price.
In an exam of 200 marks, a student scores 136 marks. What percent of marks did he score?
A candidate just passed by getting 66 answers correct by attempting 100 of the total questions. Find the total number of questions in the examination if...
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....
In 2021, the ratio of men to women in a college was 5:4. The following year, the men's count dropped by 10%, while the women's count rose by 20%, result...
Relevant for Exams:
