8. Mortar needs to build a wall using 800 bricks. He starts on Tuesday at 8am. At the start, he spends 1 minute to lay 1 brick. After 100 bricks, he grows tired and spends an additional minute per brick. After another 100 bricks, he grows tired again and spends another minute per brick. Assuming this trend continues and that he doesn’t stop until the wall is complete, when will he finish? a) How many minutes will it take him to finish? Which day? and What time?
8. Mortar needs to build a wall using 800 bricks. He starts on Tuesday at 8am. At the start, he spends 1 minute to lay 1 brick. After 100 bricks, he grows tired and spends an additional minute per brick. After another 100 bricks, he grows tired again and spends another minute per brick. Assuming this trend continues and that he doesn’t stop until the wall is complete, when will he finish? a) How many minutes will it take him to finish? Which day? and What time?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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8. Mortar needs to build a wall using 800 bricks. He starts on Tuesday at 8am. At the start, he spends 1 minute to lay 1 brick. After 100 bricks, he grows tired and spends an additional minute per brick. After another 100 bricks, he grows tired again and spends another minute per brick. Assuming this trend continues and that he doesn’t stop until the wall is complete, when will he finish?
a) How many minutes will it take him to finish? Which day? and What time?
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