01. If the cost of 37 pens and 53 pencils together is 320, while 53 pe – InterviewSolution

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1.	01. If the cost of 37 pens and 53 pencils together is 320, while 53 pensand 37 pencils together cost 400. The cost of two pens is:(1) * 6.50(2) *1.50(3) 13.00(4). 15.00- H 2 O 3 = THĂt 53 TrH H
Answer» Let pens be xAnd pencils be ySo, 37x+53y=320 53x+37y=400By simultaneous equation; (37x+53y=320)37 (53x+37y=400)531369x - 1961y =118402809x - 1961y =12100 on subtracting both equation-1440x=-260X=260/1440X=.1805So,cost of 2 pens=2x=2*.1805=.3611 rs

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