exam Maths Puzzle Numerical Ability

A low calorie dounut has 90% fewer caloires than a regular donut. How many low calorie would you need to eat to take in as many calories as you would get from a regular donut?

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exam Other Question

One printer can print the paychecks for the employees of a company in 5 min. A second printer can print the checks in 81 min. How long would it take to print the checks with both printers operating? Find the slope of the line passing through the points (-3,3)and (-3,-3)