Test Index

RRB Group D 27 Nov 2025 Shift 3 Solved Paper

Question : 37 of 100

Marks: +1, -0

Simplify:

4\div 24+3.6\times \frac{1}{9}-{\frac{1}{15}+(1-1.5)}

Solution:

Concept:

Use the BODMAS rule to simplify the expression step by step.

Explanation:

First, perform the division:

4 \div 24 = \frac{1}{6}

Next, multiply:

3.6 \times \frac{1}{9} = \frac{3.6}{9} = 0.4

Now, simplify inside the curly braces: evaluate

1 - 1.5 = -0.5

Then, add

\frac{1}{15} + (-0.5) = \frac{1}{15} - \frac{1}{2} = \frac{2}{30} - \frac{15}{30} = -\frac{13}{30}

The expression becomes

\frac{1}{6} + 0.4 - \left(-\frac{13}{30}\right)

Convert all terms to fractions with denominator 30:

\frac{1}{6} = \frac{5}{30}

0.4 = \frac{2}{5} = \frac{12}{30}

, and

-\frac{13}{30}

becomes

+\frac{13}{30}

after subtracting the negative.

Add them:

\frac{5}{30} + \frac{12}{30} + \frac{13}{30} = \frac{30}{30} = 1

Answer:

Go to Question:

Prev Question

Next Question