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#32314

applications

equations

hard

120 sec

A researcher is working on a project that involves reading scientific articles and writing summaries. The researcher can read 1 article every 20 minutes and write 1 summary every 30 minutes. If the researcher spent 2.5 hours writing summaries and completed a total of 15 articles and summaries combined, what was the total time, in hours, the researcher spent on both activities?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.