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A container consist of oil and kerosene in ratio of 2 : 7. Recommend the action from below mentioned options to obtain 1 : 1 ratio of mixture.1. Add 5 ml of oil to container2. Remove 50 ml of mixture and replace it with oil3. Add 50 ml of oil to container4. Remove 20 ml of mixture5. Remove 75 ml of oil from container |
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Answer» Correct Answer - Option 3 : Add 50 ml of oil to container Given: Initial ratio of oil : kerosene = 2 : 7 Required ratio = 1 : 1 Calculation: Let’s assume the container to be of 90 ml ⇒ Oil : kerosene = 2 : 7 ⇒ Container has oil = (2/9) × 90 ⇒ Container has oil = 20 ml ⇒ Container has kerosene = 70 ml Now, Required ratio = 1 : 1 ⇒ In order to attain this ratio both liquids needs to have equal parts ⇒ By adding 50 ml of oil, oil quantity increases = 20 +50 ⇒ Oil quantity = 70 ml ⇒ Kerosene Quantity = 70 ml ∴ 50 ml of oil needs to be added to mixture |
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