Question

In an exam of maximum 3 hours, John took 1.2 hours to complete section A of the question paper. What is the maximum time in which he can complete the second part of the question paper, Section B?

• A. 1.6 hours
• B. 1.8 hours
• C. 2 hours
• D. 3 hours

Answer 1

The correct option is B 1.8 hours

Given,
Total time = 3 hours
Time taken to complete section A $=1.2$hours
Let time taken to complete section B$=t$ hours
Time taken to complete section A + time taken to complete section B $\le$ Total time
$1.2+t\le 3$
Subtract 1.2 from both the sides
$1.2+t-1.2\le 3-1.2$
$t\le 1.8$ hours
A closed circle at $1.8$ and the red line goes to the left, indicating that $x$ is less than or equal to $\mathrm{1.8.}$

He can complete section B in maximum 1.8 hours.
Hence, option (b.) is the correct choice.