If 1/4 writing, 1/6 reading ,1/8 designing are participated in different contests and 33 participants of mathematics then total number of participants are
- 70
- 71
- 72
- 73
Explanation
Let total participant =X then X/4+ X/6+ X/8 + 33= X
LCM of 4,6,8 = 24 , multiply each by 24
X/4*24+ X/6*24+ X/8 *24+ 33(24) = 24X
6x+4x+3x+792=24x
792=24x+13x
11x=792
x=792/11=72
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