Question
The cost of diamond varies directly as the square of its
weight. A diamond broke into four pieces with weights in the ratio 1 : 3 : 4 : 7. if the loss in the total value of the diamond was Rs. 90,000. The price of the original diamond was?Solution
Let the weight of the pieces of diamond be x, 3x, 4x, 7x Total weight of diamond = x + 3x + 4x + 7x = 15x Price ∝ (weight)2 => Price = k(weight)2 ; where, K is constant Original price = k(15x)2 Price of pieces = (kx2 + 9kx2 + 16kx2 + 49kx2) = 75kx2 Loss in price = 225kx2 – 75kx2 = 150kx2 which is given as 90,000 => 150kx2 = 90000 => kx2 = 600 Original price = 225kx2 = 225 x 600 = 135000
What rank and pay do members of the National Commission for Backward Classes (NCBC) receive?
Which article can not be suspended even during the Emergency ?
In the context of the Constitution and Polity of a country, which of the following is/are correct?
1. A Constitution determines the relationship ...
Consider the following statements about the Central Zoo Authority:
1. It is a statutory body under the Ministry of Environment, Forest & Climate ...
Which of the following Schedule describes Rajya Sabha seats?
The 73rd Constitutional Amendment Act, which concerns the governance structure of which rural administrative body?
For any question regarding the disqualification of a member of parliament, the president considers the opinion of?
Which one of the following statements about the Cripps Mission is not correct?
Constitution prescribes imposition of Presidents Rule in a state if:
1. The state fails to comply with any direction from the Centre on matters ...
Who was India's first female judge at the Supreme Court?
Relevant for Exams:
