Answered: Jonas had 40 more pencils than Lisa.…

Jonas had 40 more pencils than Lisa. After Lisa gave away 20 pencils, Jonas had four times as many pencils as Lisa. How many pencils did Jonas have at first?

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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Jonas had 40 more pencils than Lisa. After Lisa gave away 20 pencils, Jonas had four times as many pencils as Lisa. How many pencils did Jonas have at first?

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