# How to Read an NPK Ratio?

Fertilizer that contains nitrogen, phosphorus or potassium must list the percentage of each ingredient by weight on the package. For example, a fertilizer labeled "21-7-14" contains 21 percent nitr... Read More »

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## How to Read the Air Fuel Ratio?

The air fuel ration is used in automobiles to determine how much air intake should be combined with the gasoline to ignite the engine. Although it is almost impossible to simply know this number ju... Read More »

## How to Read a Gear Ratio?

Gear ratios are used to compare the rate of turns of the input and output shaft in an automobile's transmission, power takeoff, power dividers and rear axles. The ratio between the first and second... Read More »

## How to Read Odds in Ratio Form?

Odds are an expression of how likely or unlikely something is to happen. When odds are written in ratio form, as X:Y, X represents the probability that the thing will happen, and Y represents the p... Read More »

## How to Read the Gear Ratio on Cars?

Gear ratio refers to the correlation between the numbers of teeth on two or more gears that are meshed together. Count the number of teeth on the gear that exerts the force, known as the pinion. Ne... Read More »

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