In a business environment, you may be expected to communicate sums, numbers, dates, times, percents, and fractions. Make sure you know the correct way to use numbers in your writing. Correct usage of numbers will minimize confusion and miscommunication.

Which sentence uses numbers correctly?

a. Ninety people voted yes after Bill’s persuasive speech on market changes and company growth.

b. 90 people voted yes after Bill’s persuasive speech on market changes and company growth.

You are in the market for a new refrigerator for your company’s lounge, and you have narrowed the search down to two models. the energy efficient model sells for $700 and will save you $45 at the end of each of the next five years in electricity costs. the standard model has features similar to the energy efficient model but provides no future saving in electricity costs. it is priced at only $500. assuming your opportunity cost of funds is 6 percent, which refrigerator should you purchase