# Difference between revisions of "2015 AMC 10B Problems/Problem 2"

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+ | Marie does her work twice in <math>1</math> hour and <math>40</math> minutes. Therefore, one task should take <math>50</math> minutes to finish. So the finishing time is <math>3:30</math>PM, <math>50</math> minutes after <math>2:40</math>PM. |

## Revision as of 18:30, 3 March 2015

## Problem

Marie does three equally time-consuming tasks in a row without taking breaks. She begins the first task at 1:00 PM and finishes the second task at 2:40 PM. When does she finish the third task?

## Solution

Marie does her work twice in hour and minutes. Therefore, one task should take minutes to finish. So the finishing time is PM, minutes after PM.