Question
A shopkeeper sells two articles for Rs.3000 each. On
one, he gains 25%, and on the other, he loses 20%. What is the overall percentage gain or loss?Solution
Let the cost price of the first article be x. Selling price = x + 25% of x = 1.25x So, 1.25x = 3000 x = 3000/1.25 = Rs.2400 Let the cost price of the second article be y. Selling price = y - 20% of y = 0.8y So, 0.8y = 3000 y = 3000/0.8 = Rs.3750 Total cost price = 2400 + 3750 = Rs.6150 Total selling price = 3000 + 3000 = Rs.6000 Loss = 6150 - 6000 = Rs.150 Percentage loss = (150/6150) × 100 = 2.44%
Find the median of 2, 8, 6, 6, 7, 9, 5, 12 and 13.
87.5% of the voters in State 'P'Â is equivalent to 10/11 of the voters in State 'Q', and 10/11 of the voters in State 'Q' is equal to 93.75% of the vot...
The mean of 12 numbers is 15. When two additional numbers, x and y , are included, the average increases by 1. Given that the difference between x and y...
- Determine the remainder when

The difference between the value of the number increased by 20% and the value of the number decreased by 30% is 120. Find the number.
How many numbers lie between 2000 and 3000 divisible by 5 can be made with the digits 2, 3, 4, 5, 6, 7 and 8 without repeating any digit?
If two numbers add up to 12 and the sum of their cubes is 1728, then what is the product of the two numbers?
If p and q are real numbers such that p2 + (p - 2q - 1)2 = - 4q(p + q), then the value p - 2q is
If the 4-digit number y29z is exactly divisible by 9, what is the least value of (y + z)?
Find the remainder when the number (256n + 105) is divided by 16.