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Natural gas, essentially methane, is upgraded by combination with nitrogen from the air to form nitrogen fertilizer. 80% of the gas is used as feedstock for fertilizer while 20% is used for heating the process and producing electricity.
In a school there are 60% boys and rest are girls. If number of girls is 360 then find the total number of boys in the school.
If 75% of a number is added to 75, the result is the number itself, then the number is:
Arun saves 30% of his salary while Gagan saves 32%. If both get the same salary and Gagan saves Rs. 1600, find the savings of Arun?