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Maths Puzzle
Numerical Ability
three consecutive integers are such that the first plus one half the second plus seven less than twice the third is 2101. What are the integers
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3. If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are ________?
a. 7 &1
how do you solve 6r+s=9
3r=-2s by using augmentd matrices?