Question
In a classroom there are 15 boys and 12 girls. Average
age of each boy and each girl is 23 years and 17 years respectively. The sum of ages of all the boys, girls and a teacher whose age is ‘x’ years is 580 years. Find the value of ‘x’.Solution
Sum of ages of all boys = 15 x 23 = 345 Sum of ages of all girls = 12 x 17 = 204 So, 345 + 204 + x = 580 => x = 31
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?
