Question

3 bags and 4 pens together cost 257 rupees whereas 4 bags and 3 pens
together cost 324 rupees. Find the cost of a bag and 10 pens.​

Answer 1

Answer:

155 is the answer

Step-by-step explanation:

75 cost of the bag

80 cost of ten pens

Answer 2

Answer:

Rs.115

Step-by-step explanation:

Let the cost of 1 bag =x

And the cost of 1 pen =y

⇒3x+4y=257

⇒4x+3y=324

Equation (1) × 4 : 12x+16y=257×4

Equation (2) × 3 : 12x+9y=324×3

Subtract two equations ;

⇒7y=56

⇒y=8

⇒x=75

⇒total cost of 1 bag and 10 pens=x+10y=75+80=155

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