If Nita is 15 ahead in rank of Mita who ranks 13th from the last, then how many students are there in the class if Nita ranks 5th in order of merit?

A circular garden with a diameter of 20 meters is surrounded by a walkway of width 1 meter. What is the area of the walkway?

A rectangle and a square have the same area. The square has a perimeter of 32 meters and the length of the rectangle is 4 meters. What is the width of the rectangle (in meters)?

If logₓ ^1/216 = -3, then x =?

If 45% of (A - B) is equal to 3/10 of (A+ B), then what percent of A is B?

Find an equation of the horizontal line containing the point (3, 2).

Find an equation for the line with x-intercept = 2, y-intercept = -1.

Choose the equation of a circle with radius 6 and center (3, -5).

The side of a square is increased by 10%, by what percent will the area be increased?

In a class, the number of boys is 35% more than that of the girls. The total number of students in the class is 94. If 6 more boys are admitted to the class, the ratio of the number of boys to that of the girls is-