Answer: C = 150$
Explanation:
C = chair
T = table
C = 10% of T
C = 10/100 x T
C = 1/10 x T
And
T + 4C = 2100$
T + 4(1/10 x T) = 2100$
T + (4T/10) = 2100$
T + 2T/5 = 2100$
5T + 2T = 10500$
7T = 10500$
T = 1500$
But C = (1/10)T
=> C = 1/10 x 1500$
C = 150$
