Question

5kg sugar and 7kg rice together cost Rs258, while 7kg sugar and 5kg rice

together cost Rs246. Find the total cost of 1kg sugar and 1kg rice.​

Answer 1

Answer:

Rs.42

Step-by-step explanation:

Let the cost of 1 kg sugar be Rs. x, and the of 1 kg rice be Rs. y,

According to question, the following equations are formed:

5x + 7y = 258

and

7x + 5y = 246.

Adding both equations,

12(x + y) = 504

so, x + y = 504/12 = 42

Hence, the total cost of 1 kg sugar and 1 kg rice is Rs. 42.