a man bought a television set at 1200 and sold it at 1400 had he bought the Set at 1300 have been the selling price to set the keep the ratio between the Purchase and sale price is an altared.
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Step-by-step explanation:
cp1=1200, sp1=1400
cp2=1300, sp2=x
he keeps the ratio, cp: sp unchanged
=> cp1:sp1=cp2:sp2
cp1:sp1= 1200:1400=6:7
1300:x = 6:7
x = 1300×7/6 = 1516 2/3=1516.67
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