Direction: In the following questions two equations numbered I and II are given. You have to solve both the equations and give answer.
(A) x>y
(B) x≥y
(C) x˂y
(D) x≤y
(E) x=y or the relations ship cannot be established

I. x² + 13x = - 42
II. y² + 16y + 63 = 0 

In a town, the population was 8000. In one year, male population increased by 10% and female population increased by 8% but the total population increased by 9% . The number of males in the town was:

A class has 90 students, of which 60 percent are girls and the rest are boys. Boys' average score in English is 30 percent higher than girls. If the average score of all students in English is 56, then what is the average score of only girls in English?

Fill in the blanks:
Sin A = ____ × (Cos A) 

Aryan invested ₹ 5200 at 4 %, 6 % and 8 % per annum simple interest. At the end of the year, he got the same interest in all the three cases, find the money invested at 4%. 

On selling an article for Rs 162 there is a loss of 10%.At what price it should be sell in order to gain a profit of 10%?

A boy added all natural numbers from 1 to 10, however, he added one number twice due to which the sum becomes 58. What is the number which he added twice? 

What should come in place of the question mark (?) in the following question?
24% of 420 × 50% of 74 = ?