When all the students in a school are made to stand in rows of 45, 40 such rows are formed. If the students are made to stand in rows of 40, how many such rows will be formed ?  Answers:
A) 31
B) 36
C) 45
D) 40
E) 21
Explanation:   Total number of students = 45 x 40   When arranged in rows of 40, number of rows formed are,   = 45.   Answer: 45
<result>C</result>
When all the students in a school are made to stand in rows of 45, 40 such rows are formed. If the students are made to stand in rows of 40, how many such rows will be formed ?