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Maths Puzzle
Numerical Ability
Mark Sullivan has only $40. He wishes to leave a 15% tip and must pay 7% tax. Find the price of the most expensive meal that he can order.
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how do u solve these linear systems by gauss elimination or any other method?
x -5y +0z +10w= 27
5x -25y +10z -4w= -47
10x +2y -1z +4w= 36
2x +4y -2z +0w= 12
Thank you very much I appreciate your help.
A car travels 120 miles. A second car, going 10mph faster than the first, makes the same trip in 1 hour less time. Findthe speed of each car. I know to use D=rt, but I'm not sur