Question

In a class, 1/7 of the time is spent on Mathematics, 2/21 on English and 1/14 on games. What fraction of the time is spent on ALL lessons EXCEPT games

Answer 1

5/21

Explanation:

1/7 + 2/21 = ?

lcd of 7 and 21 is 21 so;

( 2/21 x 1/1) + 1/7 x 3/3) = 5/21