Question

2 television and 3 video recorder cost 1750 and 4 television 1 video recorder cost 1250 what is the cost for each device (pls explain to you answer)

Answer 1

Answer:

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Step-by-step explanation:

so let the cost of one television be x rs and that of cost of one video recorder be y rs

according to the first condition

2x+3y=1750 (1)

according to the second condition

4x+y=1250 (2)

multiply (2) by 3

we get

12x+3y=3750 (3)

subtracting now (1) from (3)

we get

12x+3y=3750

2x+3y=1750

(-) (-) (-)

__________

10x=2000

so henceforth

x=200

substitute value of x in any of three equations

we get

y=450

hence cost of one television is 200 Rs and cost of one video recorder is 450 Rs