exam Maths Puzzle Numerical Ability

At 1:00 p.m., a car leaves a city and travels north at a rate of 55 mi/h. An hour later, a second car leaves the city and travels south at a rate of 60 mi/hr. At what time will the two cars be 285 miles apart?

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exam Other Question

The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spent $2000 a month on advertasing, the revenue was $120,000. If the revenue is now 180,000, how much si the owner spending on advertising? How do you u solve when they are asking to solve for the pair?

s= -16t^2 + 48t (3, )