Question
If the number of students passed in Business is
increased by 30 and the number of students passed in Accounts is decreased by 30, then the number of students passed in Accounts is approximately what percent of the number of students passed in Business?Solution
Business = 2400 × 25/100 = 600 After increasing 30 students = 600 + 30 = 630 Accounts = 2400 × 15/100 = 360 After decreasing 30 students = 360 – 30 = 330 Required percentage = 330/630 ×100 = 52.4% ≈ 52%
A man travels the first part of his journey at a speed of 40 km/h and the second part at a speed of 60 km/h. What is the average speed of the man?
If a = b in the equation of ellipse x²/a² + y²/b² = 1, then the curve becomes:
765 ÷ 25 × 100 ÷ 20 + 13 = x3 + 41, find 'x'
'P' invested a certain amount at 21% per annum simple interest for 2 years. If he had instead invested the same amount at 20% per...
The following table shows the number of cars sold by a dealership in the first six months of the year.
I. 3x2 – 15x + 18 = 0
II. 2y2 – 40y + 198 = 0
Suppose Ranjan purchases a bike for Rs. 6,50,000 and sells it for Rs. 8,00,000, calculate the profit % in this transaction.
A pipe can fill a tank in 10 hours, while another pipe can empty it in 15 hours. If both pipes are opened simultaneously, in how many hours will the tan...
Area of a rectangle is 96 m2 When the length of the same rectangle increased by 6 m and the breadth decreased by 3 m, then the area of the re...
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