In a school 60% of the students are girls. If number of boys is 480, then what is the total number of students in the school?
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The circumferences of two circles are touching externally. The distance between their centres is 12 cm. The radius of one circle is 7 cm. Find the diameter(in cm) of the other circle.
If 35% of A is equal to 60% of B, then what is the ratio of A and B?
A line passing through the origin perpendicularly cuts the line 3x - 2y = 6 at point M. Find M?
The perimeters of a square and an equilateral triangle are equal. If the diagonal of the square is 9 cm, what is the area of the equilateral triangle?
A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?
The effective annual rate of interest corresponding to a nominal rate of 15% per annum payable half-yearly is
The reciprocal of the sum of the reciprocals of 2/9 and 7/10 is