29Helppppp

Question

the members of a club planned to redecorate their club room,

each member agreed to pay $30 towards the cost then 10 members resigned and each of those left had to pay $40,

how many members were there in the club at first and how much did the redecorating cost?

Answer 1

m=# of members

30m=(m-10)*40

30m=40m-400

30m-40m=-400

-10m=-400

m=40 members to begin with

40*$30=$1200