A school has 4 sections of class 12 such that half the number of students of 1st section 1 3rd of 2n...........

Quantitative Aptitude ( CCS) Ratio, Proportion

A school has 4 sections of class 12, such that half the number of students of 1st section, 1/3rd of 2nd section, 1/4th of 3rd section and 1/5th of the 4th section are equal. If total number of students in class 12 is 420, find the number of students in sections 1st and 2nd.

180

120

240

150

छोटे Courses बड़े Results

Master Ratio, Proportion

Prepare through Micro-courses

Try Now

Explanation:

Let number of students in 4 sections be A, B, C, D respectively. Then
1/2 of A = 1/3 of b = 1/4 of C = 1/5 of D
So A : B : C : D = 2 : 3 : 4 : 5 [When A/2 = B/3 = C/4, then ratio A: B : C = 2 : 3 : 4] So students in 1st and 2nd section = [(2+3)/(2+3+4+5)] * 420 = 150