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Ozone layer, that is, the layer of life-protecting ozone found at the top of the stratosphere. Ozone is formed in the earth's stratosphere and is critical to life on earth as we know it. There is compelling scientific evidence that ozone is destroyed in the stratosphere and that some human-released chemicals areSpeeding up the breakdown of ozone in the atmosphere.
By selling 240 metres of cloth Ravi suffered the loss which was equal to the cost price of 90 metres of cloth. Find the loss percent.
A plastic toy costs ₹7. A plastic spoon costs ₹5. X spends ₹38 on these plastic items. Find the number of plastic toys he/she purchased?
A sum of Rs. 840 is divided among X, Y and Z such that X gets Rs. 132 more than Y. Y gets Rs. 75 more than Z. Find the share of Z?
Find the value of ‘x’ if x% of 600 + {1440 ÷ x of 16} × 8 = 156
The difference between the squares of two numbers is 184, and their sum is 46. What is the larger number?