Problema Solution
A group wants to by a t.v at $1470. If 7 members of the group cannot pay, the share per member increases by $5. How many members of the group are there.
Answer provided by our tutors
Let 'x' represent the number of group members and let 'y' represent the cost per member. If 7 members cannot pay, then 'x-7' represents the number of members purchasing at a cost of 'y+5' per member:
xy=1470
(x-7)(y+5)=1470
click here to solve the system
x=49
y=30
So 49 members were in the original group.