Let
i )the total number of spectators = x
ii )Number of spectators
in coverd place = 2x/7
iii ) number of
Spectators in open place = x - 2x / 7
= ( 7x - 2x ) / 7
= 5x / 7 -----( 1 )
According to the problem given ,
Number of spectators in
the open place = 15000 --------( 2 )
( 1 ) = ( 2 )
5x / 7 = 15000
x = ( 15000 ) × ( 7 / 5 )
x = 3000 × 7
x = 21000
Therefore ,
Total spectators = x = 21000