1. In a mixture of milk and water the proportion of water by weight was 75%. If in the 60 gms mixture 15 gms water was added, what would be the percentage of water in the new mixture ?
(1) 75% (2) 88%
(3) 90% (4) 100%
(5) None of these
2. A man purchased 35 kg of rice at the rate of Rs. 9.50 per kg and 30 kg at the rate of Rs. 10.50 per kg. He mixed the two. Approximately, at what price (in Rupees) per kg should he sell the mixture to make 35 per cent profit in the transaction ?
(1) 12 (2) 12.50
(3) 13 (4) 13.50
(5)None of these
3. In 1kg mixture of sand and iron, 20% is iron. How much sand should be added, so that the proportion of iron becomes 5% ?
(1) 3 kg (2) 4 gms
(3) 5 gms (4) 6 kg
(5) None of these
