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Calculate the value of: 12.5 + 4.2 * 3 - 1.8 / 0.9
23.1
24.5
22.9
25.2
23.1
Perform multiplication and division operations simultaneously from left to right before carrying out addition and subtraction.
The given expression is 12.5 + 4.2 * 3 - 1.8 / 0.9
BODMAS:┬аextBracket,Of,Division,Multiplication,Addition,Subtraction
Perform multiplication and division operations simultaneously from left to right before carrying out addition and subtraction.
Performing operations strictly from left to right without applying the BODMAS rule, such as adding 12.5 and 4.2 first.
Analyze the Expression
Identify the operations involved and apply the BODMAS rule to determine the correct order of evaluation.
12.5+4.2imes3тИТ0.91.8тАЛ
Calculate Multiplication
Multiply 4.2 by 3 first.
4.2imes3=12.6
Calculate Division
Divide 1.8 by 0.9.
rac1.80.9=2.0
Perform Addition and Subtraction
Substitute the results back into the expression and compute from left to right: 12.5+12.6тИТ2.0.
25.1тИТ2.0=23.1
A is correct because evaluating the expression using the BODMAS rule gives 23.1.
Order of operations is a fundamental prerequisite for solving simplification and data interpretation questions efficiently in competitive exams.
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