exam Maths Puzzle Numerical Ability

Solve the following system of linear inequalities by graphing.
3x + 4y < 12
x + 3y < 6
x > 0
y > 0

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exam Other Question

Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 4-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water? Two numbers differ by 20. If the larger number is divided by the smaller, the quotient is 2 and the remainder is 5. Find the numbers.