book Maths Puzzle Numerical Ability

THE SUM OF TWO CONSECUTIVE EVEN INTEGERS IS 118.

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book Other Question

Consider the following maximum problem in standard form:

Maximize Z = 8X1 + 2X2 + 3X3

subject to the constraints

X1 + 3X2 + 2X3 < 10
4X1 + 2X2 + 3X3 < 8

X1 > 0, a car stereo system thet regularly sells for $425 is on sale for $318.75. find the discount rate.