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October 21, 2014

Homework Help: maths

Posted by rajshekhar on Monday, February 1, 2010 at 6:06am.

All the students in a school are made to stand in rows so as to form an equilateral triangle. The first row consists of one student, the second row 2 students, third row 3 students and so on. Had there been 90 more students, the total number of students could have been arranged in the shape of a square, so that each side of the square has 5 students less than the number of students in the side of the triangle. Find the total number of students initially present in the school?

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