Question
Perimeter of a square is equal to perimeter of a
rectangle, if area of square is 729 sq.cm and length of rectangle is three times that of breath. Find the area of rectangle.Solution
a² = 729 cm. sq. a = 27 cm According to question, => 4 × 27 = 3 (2b + b) => 36 = 3b => b = 12 cm So, l = 12 x 3 = 36 cm Area of rectangle = (36 × 12) = 432 cm. sq.
‘A’ and ‘B’ can do a piece of work in 20 days and 32 days, respectively. If they started the work together and worked on it for 5 days, then fin...
20 men can finish a work in 220 days, but at the end of 90 days, 20 additional men are employed. In how many more days will the work be completed?
- Sanya can finish a task by herself in 20 days, while when working together, Riya and Sanya can complete the same task in 10 days. Riya starts the work alon...
Vijay can do a piece of work in 22 days and Sanjay can do the same work in 33 days. If Vijay works for 5 days and got Rs. 1650, and the remaining work w...
The time taken by ‘A’ to build a wall alone is 50% more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percen...
Sachin can complete a job in 15 days. Ankit alone can complete the same job in 10 days. Sachin works for 9 days and then the remaining job is completed ...
Time taken by 'A', 'B' and 'C' to complete a work is 51 days, 85 days and 102 days respectively. All of them started the work together but 'B' and 'A' l...
‘A’ and ‘B’ can complete a certain work in 10 days and 15 days, respectively. They started working together and worked till completion of the wo...
Ram can do a piece of work in 12 days and Shyam can do the same work in 16 days. They both started work together, Ram left 2 days before the completion ...
P and Q together can complete 75% of a work in 15 days while Q alone takes 40% more time than P and Q together to complete the whole work. Find the time...
Relevant for Exams:
