Answer :
3 tables are 4-seated table and 4 tables are 6-seated table.
Step-by-step explanation:
Let us assume,
The 4 seats table be type A table and the 6 seats table be type B table.
- The number of type A seat = x
- The number of type B seat = y
- Total table rented = 7 tables
- Total people in party = 36 people
x+y = 7 --------(1)
4x+6y = 36 -------(2)
Multiply (1) by 6 and subtract (2) from (1)
6x+6y = 42
- (4x+6y = 36)
2x = 6
x = 6/2
x = 3
The number of 4 seated table is 3.
Substitute x=3 in (1)
3+y = 7
y = 4
The number of 6 seated table is 4.