Please help(:18. All the attendees for a conference arrived by Monday morning. On Monday afternoon, 1/10 of the attendees went home. On Tuesday,...

A = # of attendees on Monday
morning.

On Monday afternoon there were 1/10 A went home
so

On Tuesday morning there were A - 1/10A = 9/10 A
attendees.

On Tuesday afternoon 1/3(9/10 A) went home
so

On Wednesday morning there were 9/10 A - 1/3(9/10A) =
9/10A - (3/10A) = 6/10A

On Wednesday afternoon 2(1/10A)
went home so there were 6/10A - 2/10A = 4/10A left.

We are
told this left 96 attendees

So 4/10A = 96   Multiplying
both sides by 10/4 we get

A = 10/4 * 96 = 10*24 =
240.

So our answer is there were 240 attendees on
Monday