text: a shop keeper sold 4 teles and 2 vcr's for $4080 total. price of vcr is 2/5 of tele.how much is each vcr?   let t = price for tele, v = price for vcr so, v = (2/5)t  4t + 2v = 4080 4t + 2(2/5)t = 4080 4t + (4/5)t = 4080 (4 + 4/5)t = 4080 (24/5)t = 4080 t = 4080*5/24 = 850  v = (2/5)t = (2/5)*850 = 340