Question 1
If \(p : q = 4 : 1,\) find \((5p + 3q) : (5p - 3q).\)
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If \(p : q = 4 : 1,\) find \((5p + 3q) : (5p - 3q).\)
What is the value of: \((\sqrt{18} + \sqrt{2})^2\) \({}- (\sqrt{8} + \sqrt{2})^2\)
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Seventy-five percent of a number is 15 more than two-thirds of that number. Find the number.
A TV set is available for ₹19,650 in cash or for ₹3,100 as a cash down payment and three equal annual instalments. If the shopkeeper charges interest at the rate of 10% per annum compounded annually, calculate the amount of each instalment.
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A gadget is sold at a 15% discount on its marked price. This sale leads to a profit of 20% on its cost price. If the profit earned is ₹450, what would have been the selling price if the gadget was sold at a 25% discount on its marked price?