Question

in library ,1/5 are math books ,1/8 are science books,1/12 are hindi books and rest of them are evs books. if the number of evs books are 142, find the total number of books in the library?​

Answer 1

Answer:

240 The total number of books is 240

Step-by-step explanation:

Given that,

In a library 1/5 are maths books, 1/8 are science books ,1/12 are hindi books are the rest are evs

Then,

sum of all fractions is 1

Let the fraction of EVS be x

Then,

1/5 + 1/8 + 1/12 + x = 1

49/120 + x = 1

x = 1 - 49/120

x = 71/120

Given,

EVS books are 142

Then, "n" be the total number of books

71/120 * n = 142

n = 142 * 120/71

n = 240

Thus total number of books is 240

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