When all the students in a school are made to stand in rows of 54, 30 such rows are formed. If the students are made to stand in rows of 45, how many such rows will be formed?
(a)25
(b)32
(c)36
(d)42
(e)None of these
Answer
Answer (as printed): C
Explanation
Total number of students $=54 \times 30$. $$\therefore \quad \text { Required number of rows }=\left(\frac{54 \times 30}{45}\right)=36 .$$
Explanation as extracted from the printed page; notation may be imperfect.