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Methane explosions occur in coal-mines when a buildup of methane gas, a by-product of coal, comes into contact with a heat source, and there is not enough air to dilute the gas to levels below its explosion point.
In an exam, Asha scored 40% marks and failed by 20 marks while Meera scored 80% marks and scored 80 marks more than the passing marks. Find out the pass...
The total population of a village is 12600. If the rate of growth of male population is 20% per year and the rate of growth of female population is 10% ...
In an election between two candidates, winner got 40% of total valid votes. If total number of votes cast were 1000 out of which 6% were invalid, then f...
Calculate the value of 'R' if 30% of 'R' equals 40% of Rs. 4,500.
Simran scored 25% marks in a test and failed by 50 marks, whereas Neil scored 40% marks in the same test and failed by 20 marks. Find the passing marks ...
When A's income is doubled and his expenditure remains unchanged, his savings increase by Rs. 40,000. If B's income is 15% higher than A's initial incom...
In village P, the number of male voters is 45% more than the number of female voters. The ratio of male voters in village P to village Q is 8:5. If the ...
Two numbers are less than a third number by 40% and 46% respectively. Find the percent by which the second number is less than the first.
A student gets an aggregate of 60% marks in five subjects in the ratio 10 : 9 : 8 : 7 : 6. If the passing marks are 45% of the maximum marks and each s...
