Question

Janifer wants to top his class in maths. To achieve this, he must obtain at least 45 marks out of 50. Assuming Janifer scores $J$ marks in this test, which of the following inequalities represents Janifer's score in order to top his class?

• A. $J>45$
• B. $J=45$
• C. $J\ge 45$

Answer 1

The correct option is C $J\ge 45$

Janifer must score 45 or more marks to top his class.

• $J>45$ includes all the scores greater than 45 but excludes 45 itself, which is not true.
• $J=45$ indicates he must score exactly $45$ out of 50, which is not true.
• $J\ge 45$ indicates he must score ranging from 45 to 50 including 45 itself. Since Janifer can obtain minimum 45 marks and still top his class, the answer is J ≥ 45.