Black pens sold by all the shopkeepers are what percent of the total pens of all three shops?
Total number of pens sold by A = 50% of 400 = 200 Total number of black pens sold by A = 200 – 500 = 150 Total number of pens sold by B = 75% of 600 = 450 Total number of black pens sold by B = 450 – 190 = 260 Total number of pens sold by C = 60% of 800 = 480 Total number of black pens sold by C = 480 – 80 = 400 Black pens sold by all the shopkeepers = 150 + 260 + 400 = 810 Total pens of all three shops = 400 + 600 + 800 = 1800 Required % = (810/1800) × 100 = 45%
I. 2y2 + 11y + 15 = 0
II. 3x2 + 4x - 4= 0
I. x2 + 16x + 63 = 0
II. y2 + 2y - 15 = 0
I. 3q² -29q +18 = 0
II. 9p² - 4 = 0
I. 6x2- 47x + 77 =0
II. 6y2- 35y + 49 = 0
I. 40 x² - 93 x + 54 = 0
II. 30 y² - 61 y + 30 = 0
I. 81x - 117√x + 40 = 0
II. 81y - 225√y + 136 = 0
I. 6x2 + 19x + 10 = 0
II. y2 + 10y + 25 = 0
Quantity I: The cash price of a notebook is Rs. 100 but is can also be purchased on 11 monthly equal instalments of Rs. 10 each. Find rate of S.I.?
I. 8/(21x) - 2/7 = 0
II. 16y² - 24y +9 = 0
The equation x2 – px – 60 = 0, has two roots ‘a’ and ‘b’ such that (a – b) = 17 and p > 0. If a series starts with ‘p’ such...