Question
In a city, 80% population eat rice and 90% of the rice
eaters are non- vegetarians. Then what percent of the population are vegetarian rice eaters?Solution
Let total number of population of city be 100, then Number of people who eat rice = 100 × 80/100 = 80 Number of people who are non-vegetarian = 80 × 90/100 = 72 Number of vegetarian people who eat rice = 80 – 72 = 8 ∴ Required percentage = 8/100 × 100 = 8%
I. y² + y – 56 = 0
II. 2x² + 11 x – 40 = 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:Â x2Â - 33x + 242 = 0
II:Â y2Â - 4y - 77 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 19x² - 88x + 100 = 0
Equation 2: 17y² - 79y + 90...
I. 27x² + 120x + 77 = 0
II. 56y² + 117y + 36 = 0
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 13x² - 60x + 47 = 0
Equation 2: 17y² - 80y + 63 = 0
I. 4x² -  15x + 9 = 0
II. 20y² -  23y + 6 = 0
I. x2 – 36 = 0
II. y2 - 7y + 6 = 0
I. x2 – 13x + 40 = 0
II. 2y2 – 15y + 13 = 0Â
I. 66x² - 49x + 9 = 0
II. 46y² - 37y - 30 = 0
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