exam Maths Puzzle Numerical Ability

two cars leave town at the same time going in the same direction. One travles at 50 mph and the other travels at 70 mph. In how many hours will they be 60 miles apart?

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exam Other Question

The cost of purchasing incandescent bulbs for use over a 9750-hour peroid is $9.75. The energy cost for incandescent bulbs over this peroid is $73. The cost of one equivalent fluor Someone please show me how to do this.

Several values of the two function f and g are listed in the following tables

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