What kind of jobs use fractions




















Other jobs use fractions in their work as well, ranging from administrative management to entry-level positions. Many professional titles such as computer programmer, statistician, actuary, quantitative analyst, scientist, economist, urban planner, lawyer and judge, all require at least some knowledge or use of fractions. Other job categories that commonly require the use of fractions include business, sales, architecture, scientific fields, art and design and the financial sector.

Recipes are often reduced to a portion of the original recipe, which involves finding fractions of the original ingredient measurements. Chefs, cooks and dietitians all use fractions. A farmer deals in measures of rainfall and fertilizer, and how that relates to harvest and market prices. These relations form ratios, which are used to determine purchase and harvest schedules. And because farmers must be good businessmen, farmers are exposed to the use of fractions in the business world interest rates, tax calculation, and so forth.

A car mechanic also deals in fractions. For example, a differential pulley--a tool used by mechanics to lift engines--depends on two pulleys having similar radii. The ratio between the two determines the mechanical advantage. Maintenance work like tune-ups such as replacement of spark plugs aims to reduce rates of gas consumption, which are themselves fractions. Paul Dohrman's academic background is in physics and economics.

That's the basic idea, although the real equations get much more complicated. Spaceships returning to the Earth heat up by thousands of degrees during reentry. Since most materials would be destroyed at those temperatures -- not to mention the crew -- aerospace engineers design heat shields to protect a ship during reentry. Heat is a form of energy, so the key to a heat shield is to send the heat back into the atmosphere rather than letting it build up in the ship.

This is called heat dissipation. Engineers use fractions to divide the amount of incoming energy during maximum heating by the actual heat-dissipation capability of the shield.

This gives a ratio of heat buildup over heat dissipation. As long as heat buildup is smaller than the dissipation rate, the shield will be safe and effective. If not, then engineers head back to the drawing board. One way to generate solar power is to use photovoltaic power cells.

These flat, dark gray panels consist of a special material that generates an electrical voltage whenever light touches it. I took my small school country school, K — 6! A few weeks later we visited the business where they were being installed. This site uses Akismet to reduce spam. Learn how your comment data is processed.

When following recipes there are fractions involved, especially when customizing the servings; there is physical measuring of dough and other ingredients; and there is other math used as well. I just know that mechanics need to know mathematical things, like pounds per square inch and torque.

Lots of it. Building things is not done by eye; that geometry that seemed so irrelevant does have a purpose somewhere.



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