Question
A chemical engineer is preparing a solution by combining three types of compounds in a specific ratio. The formula for concentration per unit volume (in mg/ml) is derived as:
Concentration = { 7/2 + [ 3/4 ÷ ( 2/5 + 1/10 ) ] - ( 1/3 + 2/9 ) } × 4/7
What is the simplified value of the final concentration?
Asked in Delhi Police Head Constable (Ministerial), 2025 · 2025
Bodmas Rule · Quantitative Aptitude
Exam PYQ4 Options
Quick Revision
Use cancellation before multiplication in fraction-heavy expressions when possible.
Correct AnswerCorrect option for this question
Learn Bodmas Rule in 60 Seconds
This video focuses on reading the expression correctly before starting the calculation.
Everything you need to learn, practice & excel — in one place.
3,000+ Video-Based Study Material
PYQ-Based Quizzes
4,000+ Informative Audiobooks
6,300+ Full-Length Mock Tests
Daily Current Affairs
40,000+ PYQs
Questions Asked from Simplification in Previous Exams
See how often Simplification has appeared in previous-year questions across major government exams.
26UPSC Questions Asked in These Years:2010, 2011, 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2026
21SSC Questions Asked in These Years:2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
15Railways Questions Asked in These Years:2016, 2018, 2020, 2021, 2022, 2024, 2025, 2026
29State PSC Questions Asked in These Years:2002, 2004, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Simplification has appeared in 91 previous-year exam questions, most frequently in State PSC, UPSC and SSC.
2-Minute Revision Notes
Revise Bodmas Rule and Its Related Concepts
Strengthen key concepts with exam-focused visual notes for faster revision.
Explore More Questions
Continue practising by chapter, topic and related subjects.
One question solved. Keep going.
Continue with the next Simplification question and build your accuracy one question at a time.