exam Maths Puzzle Numerical Ability

Solving combined inequalities
2 is less than y plus 6/2 is less than 5
AND
(4-y is less than 5 OR 4+y is less than 7)

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exam Other Question
In this problem how would you make a coordinate graph showing total earnings after each of the first eight weeks .
weeks in theaters- 1 2 3 4 5 6 7 8
week how many liters of a 45% salt solution should be mixed with 9 liters of a 35% salt solution to make a solution that is 36% salt? round to the nearest hundredth