book Maths Puzzle Numerical Ability

2a+3b+c/2d when a=2, b=0 c=3 and d=-5

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book Other Question

Max Z = 5x1 + 6x2
subject to: 17x1 + 8x2 <= 136
3x1 + 4x2 <= 36
x1, x2 >= 0 and interger
What is the optimal soulition? Z =? Put the answer in the form xx with no additional nu This is the question: Jane has 132 more marbles than Mary has. If their mother gives 25 marbles to each of them, Jane will have 5 times as many marbles as Mary.How many marbles doe