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Solve the inequation graphically
Solve 30x < 200 when:
(i) x is a natural number
(ii) x is an integer
Find all pairs of consecutive even positive integers, both of which are larger than 8, such that their sum is less than 25.
Solve −15 < 3(x − 2)/5 ≤ 0
How many litres of water will have to be added to 1125 litres of the 45% solution of acid so that the resulting mixture will contain more than 25% but less than 30% acid content?