MathDB

1

Part of 2018 Junior Regional Olympiad - FBH

Problems(3)

Junior Regional Olympiad - FBH 2018 Grade 6 Problem 1

Source:

9/18/2018
Four buddies bought a ball. First one paid half of the ball price. Second one gave one third of money that other three gave. Third one paid a quarter of sum paid by other three. Fourth paid 5$5\$. How much did the ball cost?
buyingsplitting moneyequation
Junior Regional Olympiad - FBH 2018 Grade 7 Problem 1

Source:

9/19/2018
Price of some item has decreased by 5%5\%. Then price increased by 40%40\% and now it is 1352.06$1352.06\$ cheaper than doubled original price. How much did the item originally cost?
costingequationpercent
Junior Regional Olympiad - FBH 2018 Grade 8 Problem 1

Source:

9/19/2018
When askes: "What time is it?", father said to a son: "Quarter of time that passed and half of the remaining time gives the exact time". What time was it?
timeequation