It is easy to dodge that question, all that you need to do is to imply that the workload was impacting your work/life balance or that the new set of responsibil

It is easy to dodge that question, all that you need to do is to imply that the workload was impacting your work/life balance or that the new set of responsibilties does not match the market rate even after the "decent" raise. I remember saying something similar during interviews after a company that gave me a 10% raise expected me to handle twice the amount of work and responsibility.