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Rangeela, a dishonest milk seller, when buys milk from his supplier he takes 50 ml extra for every litre but when he sells the same he gives 50 ml less for every litre. If the cost price of milk is Rs. 42/litre and selling price is Rs. 56/litre, then calculate the profit or loss he incurred during a day if he bought 20 litres of milk a day from his supplier.
Which of the following statements about minerals are correct? (A) Minerals are created by natural processes without any human interference (B) Mica and chromite are nonferrous minerals (C) Minerals lying at shallow depths are taken out through open cast mining (D) Minerals are a non-renewable resource
Indian milk market contains two types of products cow’s milk and buffalo’s milk. Commercial milk should have 80% milk. The cost of commercial milk of cow and buffalo cost Rs. 20 and Rs. 15 per liter respectively. At market both can be sold at 60% profit. A milkman who sells 70% milk as 80% and also mixes cow and buffalo in the ratio 3 ∶ 4 and sells it as cow milk. What is the profit (%) he earns?
A milk seller bought certain quantity of pure milk. He first sold 20 litres of pure milk. He added 20 litres of water to the remaining quantity of milk. He then sold 20 litres of the milk water mixture and added 20 litres of water to the mixture. He again sold 20 litres of this milk water mixture and added 20 litres of water to the mixture. Now, the ratio of milk to water is 8 : 19. How much quantity of pure milk in litres did he buy in the first place?
Which of the following is/are correct about minerals and rocks (A) Generally metallic minerals are found in igneous and metamorphic rocks. (B) If a rock contains copper then the rock looks blue in color.  (C) Al ore minerals are not rocks. (D) All rocks are not ore minerals. 
With reference to the management of minor minerals in India, consider the following statements: 1. Sand is a 'minor mineral' according to the prevailing law in the country. 2. State Governments have the power to grant mining leases of minor minerals, but the powers regarding the formation of rules related to the grant of minor minerals lie with the Central Government. 3. State Governments have the power to frame rules to prevent illegal mining of minor minerals. Which of the statements given above is/are correct?
What is the net amount of cash paid to the supplier if: Credit purchases $12,000 out of which $2000 were rejected and subsequently returned to the supplier. Supplier allowed a discount of 1% on settlement of amount.
Two suppliers A and B deliver the same raw materials for production company Z. The price offered by supplier A is less compared to the price offered by supplier B. Which supplier should the company choose?
Two suppliers A and B deliver the same raw materials for production company Z. The price offered by supplier A is less compared to the price offered by supplier B. The quality of both the raw materials is the same. Which supplier should the company choose considering other factors remaining the same for both of them?
A milk vendor has 2 cans of milk. The first contains 25% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the containers so as to get 12 litres of milk such that the ratio of water to milk is 3 : 5?