Question

cost of 4kg sugar is Rs. 124, then find cost of 3 kg suger?​

Answer 1

Answer:

Let the price of sugar be x and tea be y.

6x+5y=209....(1)

4x+3y=131....(2)

Multiply equation (1) by 4 and equation (2) by 6 and then subtract:

(6x+5y=209)4

(4x+3y=131)6

24x+20y−24x−18y=209×4−131×6

2y=836−786

2y=50

y=25

Therefore, x=14

Price of sugar is Rs.14 and price of tea is Rs.25

Answer 2

Answer:

Cost of 4kg sugar= Rs.124

Cost of 1kg sugar= Rs.124/4

=Rs. 21

Cost of 3kg sugar=Rs.21×3

=Rs.63