Let x2 = t and 2x dx = dt => ∫[dt/(t2+1)] dt => tan-1(t) + c => tan-1 x2 + c
Akshita and Monika started a business with initial investments of Rs. 2,400 and Rs. 2,500 respectively. After one year, Akshita withdrew ___% and Monika...
If the student scores 30% marks, then he is failed by 210 marks. But if he scores 55% marks then he is passed by 240 marks. Find the passing percentage....
Two students appeared in an exam and one secured 12 marks more than the other. If marks of student who got more marks is 55% of the sum of the marks of ...
Sonu saves 15% of her income. If her income increases by 20% and she still saves the same amount as before, then what is the percentage increase in her ...
A spent 20% of his monthly income on study and 65% of the remaining on rent. If amount spent on rent is Rs. 1047.8, then find the amount spent on study
A gave 40% of the amount he had to B. B gave 2/5th of what he received from A to C. After paying Rs. 260 to the taxi driver out of the amount he gets fr...
A person spent 20% of his monthly income on food and 65% of the remaining on rent. If amount spent on rent is Rs 1047.80, then find the amount spent on ...
A man invested all his current month income in starting of a new business in which he spends 40% in advertisement 20% of remaining in furniture 10% of r...
In a school, the average number of books that some numbers of boys have is 100 and average number of books that some numbers of girls have is 70. If eac...
The population of a city is decreased by 20% in the first year and then increased by 30% in the second year. Find the population of the city at the end...
