Question
The ratio of the present ages of Ginni and Binni is 7:4
respectively. Ginni is ‘n’ years older than Binni. If after 2 years, the ratio of the ages of Binni to Ginni is 2:3, then find the value of √(n+6).Solution
Let the present ages of Ginni and Binni be 7x and 4x respectively. Here, n = 7x – 4x = 3x According to the question, => (7x + 2)/(4x + 2) = 3/2 => x = 1 Now, n = 3x = 3 Required value = √(n+6) = √(3+6) = √9 = 3
Which of the following types of virus, also known as spacefiller virus,infects a file using empty sections?
A vendor buys a box of fruits for ₹720 and sells them at a 25% profit. If he sells 60% of the fruits, what will be his profit on this transaction?
887, ? , 818, 749, 657, 542.
120 litres of mixture contains water and milk in the ratio 5:6 respectively. If 32 litres of the mixture is replaced by same quantity of water, then fin...
55-litres of paint is added to a mixture of paint and oil in the ratio 3:5. The ratio of paint and oil in the resulting mixture is 4:3. Find the total v...
Determine the mean of the following observations:
24, 26, 22, 25, 20, 21, 24, 25Find the number of real solutions of sinx=x
'R' invested Rs. 24,000 in SIP 'A' with a compound interest rate of 20% per annum compounded annually, and Rs. 18,600 in SIP 'B' with a simple interest ...
- What does a landscape orientation refer to?
- What was the first successful supercomputer?
Relevant for Exams:
