So What Club

Case math and quantitative reasoning

A quick percentage-change calculation

The prompt

Revenue rose from EUR 800,000 to EUR 920,000 over a year. What is the growth rate?

Before you reveal anything, plan your own structure and first move on paper. Then reveal one part at a time and compare.

Clarifying questions, with the interviewer's answers

Next case

Read the next worked case the same way: plan your own answer first, then reveal one part at a time.

Next case: A Singapore bank wants more young customers to use its credit cardThe lesson: The arithmetic, from the ground up
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