Question : Rini has mixed two colours 'C₁' and 'C₂' in the ratio 2 : 3. If the rate of the colour 'C₁' is INR 500 per unit and she is selling the mixture of the two colours at INR 650 per unit at a breakeven price, then what is the rate (in INR) per unit of the second colour, that is, 'C₂'?

Option 1: INR 750

Option 2: INR 725

Option 3: INR 760

Option 4: INR 765

Question : One quality of rice at INR 45 per kg is mixed with another quality at a certain rate in the ratio of 3 : 2. If the mixture so formed is worth INR 50 per kg, what is the rate per kg of the second quality of rice?

Option 1: INR 57

Option 2: INR 57.5

Option 3: INR 58

Option 4: INR 58.5

Question : The compound interest (compounding annually) on a certain sum at the rate of 8% per annum for two years is INR 6,656. What would be the simple interest on the same sum at the same rate of interest for two years?

Option 1: INR 5,600

Option 2: INR 6,224

Option 3: INR 6,400

Option 4: INR 6,336

Question : Rice worth INR 35 per kilogram and INR 38 per kilogram are mixed with a third variety in the ratio 2 : 1 : 2. If the mixture is worth INR 42 per kilogram, the price of the third variety per kilogram is:

Option 1: INR 52

Option 2: INR 53

Option 3: INR 54

Option 4: INR 51

Question : The chemical formula of propene is:

Option 1: C₂H₄

Option 2: C₃H₄

Option 3: C₂H₂

Option 4: C₃H₆