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Start learning 50% faster. Sign in nowIn school A, Let number of students and teachers be 5x and 3x respectively. Now, 5x – 3x = 400 => x = 200 Total number of students = 5x = 1000 Total number of teachers = 3x = 600 Now, 2a = 1000 => a = 500 In school B, Let number of students and teachers be 7x and 9x respectively. Now, 9x – 7x = 320 => x = 160 Total number of students = 7x = 1120 Total number of teachers = 9x = 1440 Now, b + 340 = 1120 => b = 780 In school C, Here, m = 90 => n – m = 160 [n > m given] => n – 90 = 160 => n = 250 Total number of students = 90 Total number of teachers = 250 In school D, Let number of students and teachers be 4x and 5x respectively. Now, 5x – 4x = 100 => x = 100 Total number of students = 4x = 400 Total number of teachers = 5x = 500 Now, c2 = 400 => c = 20 Required answer = (250 + 20)/2 = 270/2 = 135
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If 4 kg of metal of which 1/3rd is zinc and the rest is copper, be mixed with 5kg of metal, of which 1/6 is zinc and the rest is copper, then...
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In a mixture of milk & water, 50 litres water is mixed due to which ratio changes from 3 : 4 to 1 : 8. Find initial quantity of mixture. (in litres)
In a mixture of 120 litres, milk was 58(1/3)% and rest was water. If (x + 15) of the mixture is taken out and add 8 litres of milk in it, then the diff...
A vessel is completely filled with milk. If 33% of the milk is replaced with water then only 603 ml of milk will be left in the vessel. What is the tota...
A mixture contains liquid A and liquid B in the ratio of 5:3, respectively. If 12L of liquid B is added to this mixture, the respective ratio of liquid ...
A container contains Alcohol and water in ratio of 3:5 and Capacity of Container is 160 lit. If half of the Container is replaced with 40 lit of water t...
