exam Maths Puzzle Numerical Ability

Determine the maximum and minimum value of the following set of numbers.

3, -36/7, -1, -2/3, 5/4, -5, 26/9

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exam Other Question

Find values for m and b in the following system so that the solution to the system is (-3, 4).

5x + 7y = b
mx + y = 22

Thank you for your help. Bottle A contains an 80% acid solution. Bottle B contains a 20% solution of the same acid. How many cc from bottle A should be mixed with solution from bottle B to make 40 cc