Question

2) 5 Pencils and 7 Peng to gethere cost is 1to50 Where ag 7 Pencil is and.5pens.togethere.cost.is.46​

Answer 1

Answer:

let the no of pencils be x and no of pens be y

so according to question in first case

5x+7y=50

and in second case

7x+5y=46

∴7(5x+7y)=50*7

5(7x+5y)=46*5

35x+49y=350  (1)

35x+25y=230  (2)

(-)     (-)      (-)

24y=120

y=120/24

y=5

put y=5 in equation 2

35x+25*5=230

35x+125=230

35x=230-125

35x=105

x=105/35

x=3

value of one pen is Rs 5 and value of one pencil is Rs 3

Step-by-step explanation:

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