book Maths Puzzle Numerical Ability

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

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book Other Question
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. x-1+x-2=1-2x
x+3+x-3=3-x this is a fraction,line goes acrossn all 3