For the following questions answer them individually
In an election between two candidates, one got 60% of the total valid votes, 90% of the votes were valid. If the total number of votes 12000, then what was the number of valid votes that the other candidate are got?
The marked price of a calculator is Rs, 1200. It is sold at a discount of 25 percent. If the cost price of the calculator is Rs. 800, then what is the value of profit?
If 50 boys can finish a work in 30 days by working 6 hours per day, then how many hours per day should 25 days work to finish that work within 24 days?
The line chart given below shows the marked price and selling price of 7 articles.
The total marked price of all the articles is how much percent more than the total selling price of all articles?
PM and PN are two tangents of a circle from an external point P, M and N are points on the circle. If $$PM = y^{2} -9$$ and PN = 55, then what is the value of y?
ABCD is a cyclic quadrilateral, AB is diameter of the circle. If angle $$\angle ACD = 15^{\circ}$$, then what is the value of $$\angle$$BAD?
If Manoj cycles at 12 kmph instead of 10 kmph, he would have cycled 15 km more. What is the actual distance cycled by him?
The average monthly income of A and B is Rs.7,000. The average monthly income of B and C is Rs. 7,750 and the average monthly income of C and A is Rs.6,750. What is the monthly income of B?