I. 70x² - 143x + 72 = 0 70x² - 63x - 80 x + 72 = 0 7x(10 x – 9) – 8(10 x – 9) = 0 (7x – 8) (10 x – 9) = 0 ∴x = 9/10 ,8/7 II. 80 y² - 142y + 63 = 0 80 y² - 70 y - 72y + 63 = 0 10y(8 y – 7) – 9(8 y – 7) = 0 (10 y – 9) (8 y – 7) = 0 ∴y = 9/10 ,7/8 Hence, x≥y.
A shopkeeper sells two products A and B. He earns 21% profit on a product A costing Rs. 1200. If the overall profit on selling two products is 18%, then...
The difference between the cost price and sale price of an article is Rs.680 and the profit is 32%. Find the selling price.
A sold 20% more apples than B. Ratio of number of apples sold by B to number of apples sold by C is 8:9. Find the number of apples sold by A if number o...
A dishonest milkman purchases some milk at Rs 20 per litre and mixes 6 litres water in it. By selling the mixture at the rate Rs 20 per litre, he earns ...
A smartphone was sold for Rs. 36,300 at a profit of 10%. If the smartphone was instead sold at a loss of 8%, what would have been its selling price?
The cost price of orange juice in bottle P is Rs. 68 per liter, and the cost price of orange juice in bottle Q is Rs. 48. When the orange juice in bottl...
The selling price of y items is equal to the cost price of 540 items. If the profit made is 44%, then find the value of y.
A shop owner buys six items and pays additional charges for delivery. He then sells each by marking up the price by 45% and applying a discount of 20%, ...
A dishonest seller, at the time of selling and purchasing uses weight 10% less and 20% more per kg respectively. Find the approx. percent profit earned...
A and B started a partnership business investing in the ratio of 3 : 8. C joined them after 4 months with an amount equal to 3/4th of B. What was their...
