at a cricket test match 2/7 of the spectators were in a covered place while 15000 were in open.find the total number of spectators.
let the total spectators be x
spectators sitting in a covered place=2x/7
spectators sitting in an open place=5x/7
given spectators in an open place=15000
5x/7=15000
x=15000*7/5
x=3000*7
x=21000
total spectators =21000