Question

The class 9th students of a certain public school wanted to give a farewell party to the outgoing students of class 10th. They decided to purchase two kinds of sweets, one costing ₹70 per kg and the other costing ₹84 per kg. They estimated that 36 kg of sweets were needed. If the total money spent on sweets was ₹2800,find how much sweet each kind they purchased. (It is the question of problems on simultaneous linear equations) i am not getting answer please tell its urgent

Answer 1

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Answer 2

Answer: 16kg of 70rs per kg sweet

20 kg 84rs. per kg sweets

Step-by-step explanation:

let x kg of sweets are taken of 70rs. per kg and y kg of sweets are taken 84rs. per kg.

so

x+y = 36 - - - - - - - 1

and

70x + 84y = 2800

⇒5x + 6y = 200 - - - - - - - 2

by mutiplying 5 in eq 1 and substract from eq 2

⇒ y =20

so x = 16

16 kg of 70rs per kg sweet and 20 kg 84rs. per kg sweets.