The sum of four consecutive even numbers is 108. What is the sum of the squares of these numbers?
Let the even number be x, x + 2, x + 4 and x + 6 Now, x + x + 2 + x + 4 + x + 6 = 108 4 x + 12 = 108 4 x = 96 x = 24 Now, Numbers are 24, 26, 28 and 30 Required sum = 24² + 26² + 28² + 30² = 576 + 676 + 784 + 900 = 2936
A shopkeeper bought 60 pencils at a rate of 4 for Rs. 5 and another 60pencils at a rate of 2 for Rs.3. He mixed all the pencils and sold them at a rate ...
Anita bought a laptop for Rs. '9x'. She spent Rs. 'x + 600' on upgrading its hardware and sold it to Bob for Rs. '13x - 700'. Calculate the value of 'x'...
The cost of a piece of diamond varies with the square of its weight. A diamond of Rs.6,084 value is cut into 3 pieces whose weights are in the ratio 3 ...
A shopkeeper sold an article after offering two successive discounts of 15% and 10%, respectively. The marked price of the article is Rs. 2200. If the c...
Cost price of a bag is Rs.820. The shopkeeper marked it 60% above the cost price and sold it after giving a discount of 25%. If the shopkeeper had sold ...
Eva sold a camera after giving a discount of 20% and made a profit of 55%. Had she given a discount of 10%, she would have earned Rs. 60 more. Find the ...
A and B started a business with investments in the ratio 5:4 respectively. After 4 months, C joined them with an investment 30% more than the investment...
A person sold his goods after announcing two successive discounts of 32% each. The effective discount altogether is
An item smartphone is marked 25% above its cost price and sold for Rs. 1,500 after allowing two successive discounts of 20% and 25%, respectively. Find ...
A sold a car to B at 11% profit, who later sold it back to A at 4% loss. If initially A purchased the car for Rs. 250000, then find the total profit ear...