exam Maths Puzzle Numerical Ability

- 3[-(x + 2y) - 3(y - x)]

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exam Other Question

7x+3>9x-5

5x-5<2x+10
I=Prt Solve for r
3(x-2)+2=2(x-4) If a river flows at a rate of 3mph and a boat travels 60 miles upstream and returns in a total time of 9 hours. How fast would the boat travel be traveling in still water?