The cost of 21 chairs and 35 tables is Rs 7217. What is the cost of 36 chairs and 60 tables ?
A). Rs 9372
B). Rs 10372
C). Rs 11372
D). Rs 12372
Rs 12372
Let the cost of one chair be x and that of one table be y.
∴ 21x + 35y = 7217 ......(1)
Eqn (1) x 12/7
= 21x x 12/7 + 35y x 12/7 = 7217 x 12/7
36x + 60y = 12372