exam
Maths Puzzle
Numerical Ability
Tim paddled his kayak 12km upstream against a 3km/h current and back again in 5 h 20 min. In that time how far could he have paddeld in still water?
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exam Other Question
A population grows at a rate of 8% per year forever. The population starts at 100. What is the size of the population at the end of year n? ( for any integer n)
How do I solve the following? Thanks for your help!
(7/2)x + (5/4)y = 4
(5/6)x - 2y = 21