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There are 43800 students in 4 schools of...

There are 43800 students in 4 schools of a city. If half of the first, two -third of the second, three fourth of the third and four -fifth of the fourth are the same number of students, then find the ratio of number of students of A and D if A,B,C and D be the first, second, third and fourth schools respectively.

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QUANTUM CAT-RATIO, PROPORTION & VARIATION-QUESTION BANK
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  13. The mean proportional between 8 and 98 is :

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